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Wednesday, 04/16/2025 6:40 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 WAS Washington90317-21PARKER(L)+1008.5o-15+1008o-20+1.5, -210
 PIT Pittsburgh90412-26FALTER(L)-1108.5u-05-1108ev-1.5, +175

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Team Bullpen Breakdown

Explore comprehensive MLB bullpen rosters featuring standard and Sabermetric pitching stats, plus updated injury reports to evaluate each team's relief pitching depth.

Pitcher Injuries

Stay updated with each MLB team's key impact player injury details. Find statuses, injury types, and game effect for a competitive edge in baseball insights.

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 Washington Nationals
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jake BennettSP Elbow7-day IL04/16/20250000.00000000.000.000
Jake Bennett of the Washington Nationals is on the 7-day IL due to an elbow injury. Next game: 04/16/2025 at Pittsburgh.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Pablo AldonisP UndisclosedQuestionable04/16/20250000.00000000.000.000
Pablo Aldonis (P) of the Washington Nationals is day-to-day with a questionable status for the next game on 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
DJ HerzP Elbow60-day IL04/16/20250000.00000000.000.000
DJ Herz (RP, Nationals) on 60-day IL with left elbow UCL sprain; return timetable unclear. Next game: 04/16/2025 vs. Pittsburgh.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Mike SorokaP Biceps15-day IL04/16/202502010.0108813117.201.300
Mike Soroka (SP, Nationals) is on the 15-day IL with a right biceps strain, no recovery timetable announced. Next game: 4/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Cade CavalliP Elbow15-day IL04/16/20250000.00000000.000.000
Cade Cavalli (SP, Nationals) is on the 15-day IL after Tommy John surgery; return date remains uncertain. Next game: 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Orlando RibaltaP Biceps15-day IL04/16/20250007.75552465.871.174
Orlando Ribalta of the Nationals is on the 15-day IL due to a right bicep strain and will miss an extended period.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Lucas KnowlesSP Undisclosed60-day IL04/16/20250000.00000000.000.000
Lucas Knowles (SP, Nationals) on 60-day IL with an unknown injury; next game on 04/16/2025 vs. Pittsburgh. Info updated.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Travis SykoraSP Hip7-day IL04/16/20250000.00000000.000.000
Travis Sykora (SP, Nationals) on 7-day IL due to a hip injury; next game is 04/16/2025 against Pittsburgh.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Josiah GrayP Elbow60-day IL04/16/20250000.00000000.000.000
Josiah Gray of the Nationals is on the 60-day IL with a right elbow injury from Tommy John surgery; return date unclear.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Derek LawP Forearm15-day IL04/16/20250000.00000000.000.000
Derek Law is on the 15-day IL with right forearm inflammation and is expected to miss an extended period. Next game: 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Mason ThompsonP Elbow60-day IL04/16/20250000.00000000.000.000
Mason Thompson (SP, Nationals) is on the 60-day IL recovering from Tommy John surgery with no return timetable.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Zach BrzykcyP Quad15-day IL04/16/20250001.02111119.003.000
Zach Brzykcy (RP, Nationals) is on the 15-day IL with a quad injury, out indefinitely. Next game: 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Tyler StuartSP Elbow7-day IL04/16/20250000.00000000.000.000
Tyler Stuart (SP, Nationals) is on the 7-day IL due to an elbow injury; next game is on 04/16/2025 at Pittsburgh.
 Pittsburgh Pirates
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Sean SullivanSP Elbow7-day IL04/16/20250000.00000000.000.000
Sean Sullivan of the Pittsburgh Pirates is on the 7-day IL due to an elbow injury. Next game: 04/16/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Johan OviedoP Lat60-day IL04/16/20250000.00000000.000.000
Johan Oviedo of the Pirates is on the 60-day IL with a right elbow and lat strain, sidelined indefinitely.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Dauri MoretaP Elbow60-day IL04/16/20250000.00000000.000.000
Dauri Moreta has been placed on the 60-day IL due to Tommy John surgery on his right elbow; return timetable TBD.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Colin HoldermanP Knee15-day IL04/16/202501011.01410103798.181.909
Colin Holderman (RP, Pirates) is on the 15-day IL due to a knee injury, with no return timetable. Next game 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Burch SmithRP Undisclosed7-day IL04/16/20250000.00000000.000.000
Burch Smith, RP for the Pittsburgh Pirates, is on the 7-day IL; status unknown. Next game: 04/16/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Andres SilveraP Undisclosed60-day IL04/16/20250000.00000000.000.000
Andres Silvera (P) on 60-day IL for the Pittsburgh Pirates, status unknown. Next game: 04/16/2025 vs. Washington.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Carlson ReedSP Back60-day IL04/16/20250000.00000000.000.000
Carlson Reed (SP, Pirates) on 60-day IL due to back injury. Next game: 04/16/2025 vs. Washington. Info updated 04/16/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Jared JonesP Elbow60-day IL03/28/20250000.00000000.000.000
Jared Jones (SP, Pirates) is on the 60-day IL with a right elbow UCL sprain and will be out indefinitely. Next game: 04/16/2025.

Bullpen Pitching Stats

2025 Pitching Stats in All Games

This table displays pitching statistics for a team's bullpen, highlighting the expected available pitchers for today's game. Key stats such as ERA, WHIP, saves, and opponents' batting averages are included to help bettors and fantasy managers evaluate bullpen strength. Pitchers highlighted in white rows are projected to be available for relief appearances, while players shown in grey rows are currently unavailable or listed as starting pitchers. Favorable and unfavorable performance indicators are clearly marked in green and red, respectively, allowing for quick identification of bullpen advantages or vulnerabilities.

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 Washington Bullpen - 2025 All Games Pitching Statistics
Player
T
 W L ERA G HLD SV BSV SV% IP H R ER HR BB IBB HBP SO WP BK WHIP AVGa OBPa SLGa OPSa
Kyle Finnegan
R
 0 1 3.07 15 0 12 2 85.7% 14.7 14 5 5 0 7 0 0 15 4 0 1.432 0.255 0.339 0.418 0.757
Jose A. Ferrer
L
 0 2 8.05 19 9 0 0 0.0% 19.0 27 19 17 1 7 0 3 20 2 0 1.789 0.338 0.411 0.450 0.861
Jorge Lopez
R
 5 0 7.41 17 3 0 2 0.0% 17.0 16 14 14 1 6 0 2 10 2 0 1.294 0.254 0.338 0.365 0.703
Andrew Chafin
L
 0 0 3.86 3 2 0 0 0.0% 2.3 2 1 1 0 2 0 0 3 2 0 1.714 0.250 0.400 0.250 0.650
Lucas Sims
R
 1 0 12.34 17 1 0 1 0.0% 11.7 13 16 16 2 10 0 6 13 2 0 1.971 0.271 0.453 0.500 0.953
Brad Lord
R
 1 4 4.45 9 0 0 0 0.0% 28.3 30 15 14 2 11 0 2 21 0 0 1.447 0.278 0.355 0.398 0.754
Orlando Ribalta
R
 0 0 5.87 4 1 0 0 0.0% 7.7 5 5 5 2 4 0 0 6 0 0 1.174 0.172 0.273 0.379 0.652
Jackson Rutledge
R
 0 0 2.08 10 1 0 0 0.0% 13.0 10 4 3 1 7 0 2 19 3 0 1.308 0.208 0.333 0.292 0.625
Cole Henry
R
 0 0 4.09 8 0 0 0 0.0% 11.0 10 5 5 1 4 1 3 12 0 0 1.273 0.233 0.340 0.372 0.712
MacKenzie Gore
L
 2 3 3.33 8 0 0 0 0.0% 46.0 40 17 17 6 13 0 1 68 2 0 1.152 0.235 0.293 0.382 0.676
Jake Irvin
R
 2 1 3.94 8 0 0 0 0.0% 48.0 41 21 21 9 14 0 1 33 1 0 1.146 0.227 0.286 0.420 0.706
Mike Soroka
R
 0 2 7.20 2 0 0 0 0.0% 10.0 10 8 8 1 3 0 1 11 0 0 1.300 0.256 0.326 0.436 0.761
Trevor Williams
R
 2 3 5.86 7 0 0 0 0.0% 35.3 46 23 23 5 11 0 0 30 1 0 1.613 0.317 0.365 0.476 0.841
DJ Herz
L
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Josiah Gray
R
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000

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 Pittsburgh Bullpen - 2025 All Games Pitching Statistics
Player
T
 W L ERA G HLD SV BSV SV% IP H R ER HR BB IBB HBP SO WP BK WHIP AVGa OBPa SLGa OPSa
Dennis Santana
R
 0 1 1.26 15 4 3 0 100.0% 14.3 9 3 2 0 3 0 0 9 0 0 0.837 0.191 0.240 0.277 0.517
Caleb Ferguson
L
 1 0 4.50 17 4 0 1 0.0% 16.0 15 8 8 0 7 1 1 9 0 0 1.375 0.259 0.348 0.310 0.659
Ryan Borucki
L
 0 0 3.07 16 5 0 1 0.0% 14.7 9 6 5 0 4 1 0 13 2 1 0.886 0.176 0.236 0.255 0.491
David Bednar
R
 0 3 5.00 11 2 3 0 100.0% 9.0 10 6 5 1 3 1 0 11 2 0 1.444 0.278 0.333 0.500 0.833
Colin Holderman
R
 0 1 8.18 11 1 0 2 0.0% 11.0 14 10 10 3 7 0 2 9 1 0 1.909 0.333 0.451 0.595 1.046
Joey Wentz
L
 1 1 3.44 14 0 0 0 0.0% 18.3 15 9 7 2 9 2 1 15 0 0 1.309 0.217 0.316 0.348 0.664
Chase Shugart
R
 1 2 3.68 13 0 0 1 0.0% 14.7 12 6 6 2 4 0 0 11 1 0 1.091 0.218 0.271 0.382 0.653
Tim Mayza
L
 0 0 2.89 7 0 0 0 0.0% 9.3 9 3 3 1 1 0 1 8 0 0 1.071 0.243 0.282 0.432 0.714
Justin Lawrence
R
 1 0 0.79 11 3 0 1 0.0% 11.3 5 1 1 0 6 1 2 15 1 0 0.971 0.139 0.295 0.222 0.518
Tanner Rainey
R
 0 0 0.00 1 0 0 0 0.0% 1.0 0 0 0 0 0 0 0 2 0 0 0.000 0.000 0.000 0.000 0.000
Dauri Moreta
R
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Michael Burrows
R
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Paul Skenes
R
 3 4 2.77 8 0 0 0 0.0% 48.7 34 17 15 4 12 0 1 47 1 0 0.945 0.192 0.247 0.322 0.569
Mitch Keller
R
 1 4 4.40 8 0 0 0 0.0% 45.0 48 24 22 3 15 0 4 35 1 0 1.400 0.267 0.337 0.378 0.714
Andrew Heaney
L
 2 3 3.18 7 0 0 0 0.0% 39.7 31 14 14 4 13 0 2 34 0 0 1.109 0.212 0.286 0.377 0.662
Carmen Mlodzinski
R
 1 3 6.16 7 0 0 0 0.0% 30.7 41 21 21 4 10 0 1 24 0 0 1.663 0.318 0.371 0.488 0.860
Johan Oviedo
R
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000
Jared Jones
R
 0 0 0.00 0 0 0 0 0.0% 0.0 0 0 0 0 0 0 0 0 0 0 0.000 0.000 0.000 0.000 0.000

2025 Advanced Pitching Stats in All Games

This table provides advanced pitching and Sabermetric statistics for the team's bullpen pitchers, highlighting expected availability for today's game. Metrics include ERA and advanced ERA estimators (xERA, FIP, SIERA), strikeout and walk rates, and performance with inherited runners, helping bettors and fantasy managers assess bullpen effectiveness. Pitchers in white rows are projected available for relief, while those in grey rows are either unavailable or designated as starters. Favorable (green) and unfavorable (red) performances are clearly marked for quick reference.

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 Washington Bullpen - 2025 All Games Advanced Pitching Statistics
  ERA Estimates Percentages and Ratios Inherited Runners
Player
T
 ERA xERA ERC FIP dERA DICE SIERA HR% Str% BB% BB9 SO% SO9 SOBB PFR LOB% GOFO IR IRA IRA%
Kyle Finnegan
R
 3.07 3.34 3.26 2.49 2.66 2.49 2.48 0.0% 62.6% 10.8% 4.3 23.1% 9.2 2.14 1.50 76.2% 1.63 8 5 62.5%
Jose A. Ferrer
L
 8.05 5.92 6.56 3.26 3.31 3.26 3.28 1.1% 67.3% 7.4% 3.3 21.3% 9.5 2.86 1.42 50.6% 3.29 11 4 36.4%
Jorge Lopez
R
 7.41 3.49 3.64 4.10 4.16 4.10 4.09 1.4% 68.7% 8.0% 3.2 13.3% 5.3 1.67 0.94 44.2% 2.71 12 5 41.7%
Andrew Chafin
L
 3.86 3.77 3.91 3.10 3.25 3.10 3.27 0.0% 57.1% 18.2% 7.7 27.3% 11.6 1.50 2.14 75.0% 0.00 4 2 50.0%
Lucas Sims
R
 12.34 6.57 8.88 7.21 6.63 7.21 7.25 3.1% 56.7% 15.6% 7.7 20.3% 10.0 1.30 1.97 49.6% 2.80 5 3 60.0%
Brad Lord
R
 4.45 4.28 4.43 3.91 3.93 3.91 3.90 1.7% 64.0% 8.6% 3.5 16.4% 6.7 1.91 1.13 69.7% 2.25 2 0 0.0%
Orlando Ribalta
R
 5.87 4.12 3.40 6.49 6.35 6.49 6.49 6.1% 63.4% 12.5% 4.7 18.8% 7.0 1.50 1.30 64.5% 2.25 3 0 0.0%
Jackson Rutledge
R
 2.08 3.15 3.57 3.25 3.21 3.25 3.25 1.8% 62.8% 12.1% 4.8 32.8% 13.2 2.71 2.00 85.2% 0.88 4 2 50.0%
Cole Henry
R
 4.09 3.58 4.16 4.01 3.93 4.01 3.69 2.0% 61.6% 8.0% 3.3 24.0% 9.8 3.00 1.45 76.9% 2.00 4 1 25.0%
MacKenzie Gore
L
 3.33 3.47 3.17 2.75 2.71 2.75 2.75 3.3% 63.8% 6.8% 2.5 35.4% 13.3 5.23 1.76 81.1% 0.96 0 0 0.0%
Jake Irvin
R
 3.94 3.97 3.45 5.10 5.02 5.10 5.10 4.6% 66.3% 7.0% 2.6 16.5% 6.2 2.36 0.98 80.6% 1.35 0 0 0.0%
Mike Soroka
R
 7.20 3.97 3.99 3.40 3.34 3.40 3.41 2.3% 68.3% 6.8% 2.7 25.0% 9.9 3.67 1.40 47.6% 5.50 0 0 0.0%
Trevor Williams
R
 5.86 5.93 5.68 4.18 4.02 4.18 4.17 3.2% 61.6% 6.7% 2.8 18.4% 7.6 2.73 1.16 68.0% 1.11 0 0 0.0%
DJ Herz
L
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Josiah Gray
R
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%

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 Pittsburgh Bullpen - 2025 All Games Advanced Pitching Statistics
  ERA Estimates Percentages and Ratios Inherited Runners
Player
T
 ERA xERA ERC FIP dERA DICE SIERA HR% Str% BB% BB9 SO% SO9 SOBB PFR LOB% GOFO IR IRA IRA%
Dennis Santana
R
 1.26 1.01 1.25 2.47 2.57 2.47 2.50 0.0% 71.8% 5.5% 1.9 16.4% 5.7 3.00 0.84 75.0% 1.07 4 1 25.0%
Caleb Ferguson
L
 4.50 3.19 3.37 3.47 3.72 3.48 3.28 0.0% 64.9% 9.9% 3.9 12.7% 5.1 1.29 1.00 65.2% 1.78 5 0 0.0%
Ryan Borucki
L
 3.07 1.07 1.28 2.15 2.28 2.15 1.96 0.0% 62.8% 7.0% 2.5 22.8% 8.0 3.25 1.16 53.8% 10.00 10 2 20.0%
David Bednar
R
 5.00 4.71 4.35 3.10 3.08 3.10 2.76 2.6% 65.5% 7.5% 3.0 27.5% 11.0 3.67 1.56 60.3% 4.00 0 0 0.0%
Colin Holderman
R
 8.18 7.71 9.11 7.46 7.08 7.46 7.53 5.9% 65.0% 12.5% 5.7 16.1% 7.4 1.29 1.45 69.1% 17.00 11 4 36.4%
Joey Wentz
L
 3.44 3.61 3.45 4.52 4.55 4.52 4.18 2.5% 62.7% 11.3% 4.4 18.8% 7.4 1.67 1.31 72.1% 1.70 9 6 66.7%
Chase Shugart
R
 3.68 3.30 2.74 4.19 4.13 4.19 4.15 3.4% 62.2% 6.7% 2.5 18.3% 6.8 2.75 1.02 75.8% 1.71 4 0 0.0%
Tim Mayza
L
 2.89 3.38 3.01 3.42 3.41 3.42 3.44 2.6% 67.9% 2.6% 1.0 20.5% 7.7 8.00 0.96 83.3% 3.00 8 2 25.0%
Justin Lawrence
R
 0.79 0.79 1.67 2.57 2.66 2.57 2.32 0.0% 57.6% 12.8% 4.8 31.9% 11.9 2.50 1.85 92.3% 5.00 2 1 50.0%
Tanner Rainey
R
 0.00 -2.89 0.00 -0.90 -0.98 -0.90 0.36 0.0% 75.0% 0.0% 0.0 66.7% 18.0 0.00 2.00 0.0% 0.00 0 0 0.0%
Dauri Moreta
R
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Michael Burrows
R
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Paul Skenes
R
 2.77 2.14 1.85 3.04 3.03 3.04 3.04 2.1% 64.3% 6.2% 2.2 24.4% 8.7 3.92 1.21 72.5% 2.25 0 0 0.0%
Mitch Keller
R
 4.40 4.14 4.15 3.68 3.68 3.68 3.68 1.5% 66.3% 7.4% 3.0 17.3% 7.0 2.33 1.11 68.5% 1.52 0 0 0.0%
Andrew Heaney
L
 3.18 2.94 2.76 3.83 3.85 3.83 3.83 2.5% 65.3% 7.9% 2.9 20.6% 7.7 2.62 1.18 79.2% 1.91 0 0 0.0%
Carmen Mlodzinski
R
 6.16 6.06 6.07 4.31 4.16 4.31 4.31 2.9% 63.2% 6.9% 2.9 16.7% 7.0 2.40 1.11 66.8% 2.06 0 0 0.0%
Johan Oviedo
R
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Jared Jones
R
 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0% 0.0% 0.0% 0.0 0.0% 0.0 0.00 0.00 0.0% 0.00 0 0 0.0%
Glossary of Terms

Player: The name of the bullpen pitcher.

T: The throwing hand of the pitcher (L for left-handed, R for right-handed).

W: The total number of wins credited to the pitcher.

L: The total number of losses credited to the pitcher.

ERA (Earned Run Average): The average number of earned runs allowed per nine innings pitched.

G (Games Played): The number of games in which the pitcher has appeared.

HLD (Holds): The number of times a relief pitcher maintains a lead before passing the game to another reliever.

SV (Saves): The number of times a pitcher successfully finishes a game with a lead.

BSV (Blown Saves): The number of times a pitcher enters in a save situation and fails to maintain the lead.

SV% (Save Percentage): The percentage of save opportunities successfully converted.

IP (Innings Pitched): The total number of innings pitched by the player.

H (Hits Allowed): The total number of hits allowed by the pitcher.

R (Runs Allowed): The total number of runs allowed, including earned and unearned runs.

ER (Earned Runs): The total number of runs scored against the pitcher that were not the result of defensive errors.

HR (Home Runs Allowed): The total number of home runs given up by the pitcher.

BB (Walks): The total number of batters walked by the pitcher.

IBB (Intentional Walks): The number of walks that were intentionally issued.

HBP (Hit by Pitch): The number of batters hit by a pitch.

SO (Strikeouts): The number of batters struck out by the pitcher.

WP (Wild Pitches): The number of pitches that the catcher fails to catch, allowing runners to advance.

BK (Balks): The number of illegal pitching movements that allow runners to advance.

WHIP (Walks + Hits per Inning Pitched): The average number of walks and hits allowed per inning pitched.

AVGa (Opponent Batting Average): The batting average of opposing hitters against the pitcher.

OBPa (Opponent On-Base Percentage): The on-base percentage of opposing hitters against the pitcher.

SLGa (Opponent Slugging Percentage): The slugging percentage of opposing hitters against the pitcher.

OPSa (Opponent On-Base Plus Slugging): The on-base plus slugging percentage of opposing hitters against the pitcher.

ERA (Earned Run Average): The average number of earned runs a pitcher allows per nine innings.

xERA (Expected ERA): A predictive measure of ERA based on batted-ball data, strikeouts, and walks.

ERC (Component ERA): An estimate of ERA based on hits, walks, and home runs allowed.

FIP (Fielding Independent Pitching): A metric that evaluates a pitcher's effectiveness independent of fielding by focusing on strikeouts, walks, and home runs allowed.

dERA (Defense-Independent ERA): An alternative ERA metric that removes the effect of defense and focuses on pitching outcomes.

DICE (Defense-Independent Component ERA): A similar stat to FIP that adjusts for defense-independent outcomes.

SIERA (Skill-Interactive ERA): A sabermetric pitching stat that evaluates a pitcher's overall skill by considering how batted balls are put in play.

Pitching Ratios & Percentages

Str% (Strike Percentage): The percentage of total pitches thrown for strikes.

BB% (Walk Percentage): The percentage of batters faced who are walked.

BB9 (Walks per 9 Innings): The average number of walks allowed per nine innings.

SO% (Strikeout Percentage): The percentage of batters faced who are struck out.

SO9 (Strikeouts per 9 Innings): The average number of strikeouts per nine innings.

SO/BB (Strikeout-to-Walk Ratio): The ratio of strikeouts to walks, indicating control and command.

PFR (Power-Finesse Ratio): A measure of a pitcher’s ability to generate strikeouts while limiting walks.

LOB% (Left on Base Percentage): The percentage of baserunners left stranded by a pitcher.

GO/FO (Ground Out to Fly Out Ratio): A measure of a pitcher's tendency to induce ground balls compared to fly balls.

Pitching Performance Indicators

Dom (Dominant Starts): The number of starts classified as dominant based on low runs allowed and high strikeout rates.

Dom% (Dominant Start Percentage): The percentage of total starts that were dominant performances.

Dis (Disaster Starts): The number of starts where the pitcher performed poorly, allowing a high number of runs.

Dis% (Disaster Start Percentage): The percentage of total starts that were considered disasters.

Inherited Runners

IR (Inherited Runners): The number of runners already on base when the pitcher enters the game.

IRA (Inherited Runners Allowed): The number of inherited runners that the pitcher allows to score.

IRA% (Inherited Runner Scoring Percentage): The percentage of inherited runners that end up scoring.