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Sunday, 05/18/2025 2:10 PM 
 RecordStarterOpenLatest
 Gm#W-LPitcherMLO/UMLO/URL
 STL Saint Louis91926-20LIBERATORE(L)+1058.5ev-1158o-15-1.5, +130
 KC Kansas City92025-22WACHA(R)-1158.5u-20+1058u-05+1.5, -150

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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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 Saint Louis Cardinals
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Drew RomSP Shoulder7-day IL05/18/20250000.00000000.000.000
Drew Rom of the St. Louis Cardinals is on the 7-day IL due to a shoulder injury, with his next game on 05/18/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Packy NaughtonSP Elbow60-day IL05/18/20250000.00000000.000.000
Packy Naughton (SP, Cardinals) on 60-day IL due to elbow injury; next game on 05/18/2025 against Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Tink HenceSP Ribs60-day IL05/18/20250000.00000000.000.000
Tink Hence of the St. Louis Cardinals is on the 60-day IL due to a rib injury. Next game: 05/18/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Rob KaminskyRP Undisclosed7-day IL05/18/20250000.00000000.000.000
Rob Kaminsky (RP, Cardinals) is on the 7-day IL with an unknown injury. Next game: 05/18/2025 vs. Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Cooper HjerpeSP Elbow60-day IL05/18/20250000.00000000.000.000
Cooper Hjerpe (SP, Cardinals) on 60-day IL due to elbow injury; next game 05/18/2025 at Kansas City. Info as of 05/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Brian HolidaySP Undisclosed60-day IL05/18/20250000.00000000.000.000
Brian Holiday of the St. Louis Cardinals is on the 60-day IL with an unknown injury. Next game: 05/18/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Victor SantosP Undisclosed60-day IL05/18/20250000.00000000.000.000
Victor Santos (P) of the St. Louis Cardinals is on the 60-day IL; next game on 05/18/2025 vs. Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Quinn MatthewsSP Shoulder7-day IL05/18/20250000.00000000.000.000
Quinn Matthews (SP, Cardinals) on 7-day IL with a shoulder injury; next game on 05/18/2025 against Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Sem RobberseP Elbow60-day IL05/18/20250000.00000000.000.000
Sem Robberse (P) on 60-day IL with an elbow injury; next game for Cardinals is 05/18/2025 at Kansas City.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Zack ThompsonP Back60-day IL05/06/20250000.00000000.000.000
Zack Thompson (P, STL Cardinals) on 60-day IL with Grade 1 lat strain; expected to return early June 2025. Next game: 05/18.
 Kansas City Royals
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Seth LugoP Finger15-day IL05/17/202534056.7472119915423.021.094
Seth Lugo (P) of the Royals is on the 15-day IL with a finger injury and will miss an extended period. Next game: 05/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Steven ZobacSP Knee7-day IL05/18/20250000.00000000.000.000
Steven Zobac of the Kansas City Royals is on the 7-day IL due to a knee injury. Next game: 05/18/2025 vs. Saint Louis.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Asa LacySP Elbow7-day IL05/18/20250000.00000000.000.000
Asa Lacy (SP, Royals) on 7-day IL due to elbow injury; next game scheduled for 05/18/2025 against the Cardinals.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
L.P. LangevinSP Lat60-day IL05/18/20250000.00000000.000.000
L.P. Langevin (SP) on 60-day IL due to lat injury, next game for Kansas City Royals is 05/18/2025 vs. Saint Louis.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Carlos MateoP Undisclosed7-day IL05/18/20250000.00000000.000.000
Carlos Mateo (P) placed on 7-day IL for unknown reasons. Next game: 05/18/2025 vs. Saint Louis. Info updated 05/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Anthony SimonelliSP Undisclosed60-day IL05/18/20250000.00000000.000.000
Anthony Simonelli (SP, Royals) on 60-day IL; next game on 05/18/2025 vs. St. Louis. Status remains unknown.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Sam LongP Elbow15-day IL05/18/20250207.012121025612.862.429
Sam Long of the Kansas City Royals has been placed on the 15-day IL with left elbow inflammation and is out indefinitely.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Cole RagansP Groin15-day IL05/17/202523045.7422423413724.531.204
Cole Ragans (P, Royals) is on the 15-day IL with a groin injury; no return timeline available. Next game: 05/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Taylor ClarkeP Paternity ListProbable05/16/20251005.33000030.000.563
Taylor Clarke (P, Royals) is probable for Sunday vs. Cardinals but may miss the game due to paternity leave.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
James McArthurP Elbow60-day IL05/13/20250000.00000000.000.000
James McArthur (P, Royals) is on the 60-day IL for right elbow surgery with no set return date. Next game: 5/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Alec MarshP Shoulder60-day IL05/04/20250000.00000000.000.000
Alec Marsh (P, Royals) is on a 60-day IL for a shoulder injury, with no return date confirmed. Next game: 05/18/2025 vs. STL.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Kyle WrightP Shoulder15-day IL05/04/20250000.00000000.000.000
Kyle Wright (P, Royals) is on the 15-day IL for shoulder surgery with no return timetable. Next game: 05/18/2025.
PlayerPosInjuryStatusUpdatedWLSVIPHRERHRBBSOERAWHIP
Hunter HarveyP Undisclosed15-day IL05/04/20250005.31000070.000.188
Hunter Harvey, of the Royals, is on the 15-day IL with a Grade 1 shoulder strain and will miss an extended period.

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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 Saint Louis 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
Ryan Helsley
R
 1 0 2.81 16 0 9 2 81.8% 16.0 13 5 5 1 10 1 1 16 2 0 1.438 0.224 0.348 0.310 0.658
Phil Maton
R
 0 1 3.18 19 8 1 1 50.0% 17.0 17 7 6 0 4 0 2 21 0 0 1.235 0.254 0.315 0.313 0.629
Steven Matz
L
 2 1 1.91 12 3 1 1 50.0% 28.3 25 7 6 0 3 0 1 23 1 0 0.988 0.234 0.261 0.271 0.532
John King
L
 0 0 4.61 15 1 0 1 0.0% 13.7 18 9 7 2 6 0 0 7 0 0 1.756 0.310 0.375 0.466 0.841
Kyle Leahy
R
 1 0 1.01 20 10 0 1 0.0% 26.7 11 3 3 2 7 0 1 21 0 0 0.675 0.125 0.198 0.205 0.402
JoJo Romero
L
 1 3 4.85 17 6 0 0 0.0% 13.0 11 8 7 1 9 2 0 9 0 0 1.538 0.250 0.377 0.364 0.741
Chris Roycroft
R
 1 2 5.19 10 2 0 0 0.0% 8.7 8 7 5 0 7 1 0 6 1 0 1.731 0.250 0.385 0.406 0.791
Gordon Graceffo
R
 2 0 5.68 6 0 1 0 100.0% 12.7 12 9 8 1 1 0 0 10 2 0 1.026 0.235 0.250 0.431 0.681
Matthew Svanson
R
 0 0 2.70 5 0 0 0 0.0% 6.7 3 2 2 0 3 0 0 7 0 0 0.900 0.136 0.240 0.182 0.422
Sonny Gray
R
 4 1 4.50 9 0 0 0 0.0% 50.0 47 27 25 9 12 0 2 51 1 0 1.180 0.249 0.300 0.429 0.729
Erick Fedde
R
 3 3 3.44 9 0 0 0 0.0% 52.3 43 20 20 3 25 0 1 32 1 0 1.299 0.228 0.321 0.333 0.654
Miles Mikolas
R
 3 2 3.77 9 0 0 0 0.0% 45.3 40 20 19 2 15 0 2 27 0 0 1.213 0.234 0.303 0.339 0.642
Andre Pallante
R
 4 2 4.11 9 0 0 0 0.0% 50.3 51 23 23 8 16 0 0 32 3 1 1.331 0.259 0.315 0.447 0.761
Michael McGreevy
R
 1 0 0.00 1 0 0 0 0.0% 5.7 1 0 0 0 1 0 1 5 0 0 0.353 0.056 0.150 0.056 0.206
Drew Rom
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

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 Kansas City 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
Carlos Estevez
R
 1 0 2.29 19 0 12 2 85.7% 19.7 14 6 5 0 10 3 2 18 1 1 1.220 0.194 0.310 0.236 0.546
Lucas Erceg
R
 0 0 0.47 20 13 1 0 100.0% 19.0 8 1 1 0 1 0 1 14 1 0 0.474 0.131 0.159 0.131 0.290
John Schreiber
R
 1 2 3.12 20 3 0 0 0.0% 17.3 16 7 6 4 6 0 0 19 0 0 1.269 0.250 0.314 0.469 0.783
Angel Zerpa
L
 2 0 6.35 17 1 0 2 0.0% 17.0 26 12 12 4 5 0 1 12 0 0 1.824 0.351 0.400 0.595 0.995
Daniel Lynch
L
 3 0 0.90 18 2 1 0 100.0% 20.0 13 3 2 1 7 1 1 10 0 0 1.000 0.191 0.276 0.265 0.541
Chris Stratton
R
 0 0 7.94 12 0 0 0 0.0% 17.0 29 17 15 2 8 0 0 16 0 0 2.176 0.377 0.435 0.558 0.994
Steven Cruz
R
 1 0 1.32 15 3 0 0 0.0% 13.7 5 3 2 0 4 0 1 10 1 0 0.659 0.111 0.200 0.133 0.333
Taylor Clarke
R
 1 0 0.00 5 0 0 0 0.0% 5.3 3 0 0 0 0 0 0 3 1 0 0.563 0.158 0.158 0.158 0.316
Samuel Sisk
L
 0 0 0.00 2 0 0 0 0.0% 2.3 2 0 0 0 2 0 0 5 0 1 1.714 0.222 0.364 0.222 0.586
Hunter Harvey
R
 0 0 0.00 6 3 0 0 0.0% 5.3 1 0 0 0 0 0 0 7 0 0 0.188 0.059 0.059 0.059 0.118
Sam Long
L
 0 2 12.86 7 0 0 0 0.0% 7.0 12 12 10 2 5 1 0 6 3 0 2.429 0.375 0.459 0.656 1.116
Kristofer Bubic
L
 4 2 1.82 9 0 0 0 0.0% 54.3 46 12 11 3 15 1 2 56 1 0 1.123 0.228 0.288 0.327 0.614
Michael Lorenzen
R
 3 4 3.76 9 0 0 0 0.0% 52.7 50 23 22 9 15 0 1 45 6 0 1.234 0.246 0.301 0.448 0.750
Cole Ragans
L
 2 3 4.53 9 0 0 0 0.0% 45.7 42 24 23 4 13 0 1 72 3 0 1.204 0.241 0.298 0.391 0.689
Seth Lugo
R
 3 4 3.02 9 0 0 0 0.0% 56.7 47 21 19 9 15 1 1 42 3 0 1.094 0.230 0.286 0.402 0.688
Noah Cameron
L
 1 1 0.71 2 0 0 0 0.0% 12.7 3 1 1 1 5 0 0 6 0 0 0.632 0.073 0.174 0.146 0.320
Kyle Wright
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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 Saint Louis 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%
Ryan Helsley
R
 2.81 3.51 3.79 3.97 4.02 3.97 3.78 1.4% 65.1% 13.9% 5.6 22.2% 9.0 1.60 1.63 84.1% 2.50 0 0 0.0%
Phil Maton
R
 3.18 2.95 3.08 1.69 1.92 1.69 1.69 0.0% 65.4% 5.4% 2.1 28.4% 11.1 5.25 1.47 69.6% 2.14 5 2 40.0%
Steven Matz
L
 1.91 2.05 1.82 1.90 2.12 1.90 1.90 0.0% 66.3% 2.6% 1.0 20.2% 7.3 7.67 0.92 75.9% 1.19 3 0 0.0%
John King
L
 4.61 6.40 6.32 5.30 5.17 5.30 5.34 3.1% 64.2% 9.2% 4.0 10.8% 4.6 1.17 0.95 70.8% 13.00 12 5 41.7%
Kyle Leahy
R
 1.01 0.65 1.05 3.40 3.43 3.40 3.41 2.1% 65.8% 7.1% 2.4 21.2% 7.1 3.00 1.05 98.8% 3.00 9 2 22.2%
JoJo Romero
L
 4.85 4.00 3.97 4.79 5.00 4.79 4.36 1.9% 60.0% 15.3% 6.2 15.3% 6.2 1.00 1.38 64.5% 2.00 9 3 33.3%
Chris Roycroft
R
 5.19 4.04 4.11 4.14 4.32 4.14 3.82 0.0% 57.8% 17.1% 7.3 14.6% 6.2 0.86 1.50 53.3% 1.43 9 5 55.6%
Gordon Graceffo
R
 5.68 2.99 2.34 2.78 2.83 2.78 2.78 1.9% 68.9% 2.0% 0.7 19.6% 7.1 10.00 0.87 34.5% 2.50 2 2 100.0%
Matthew Svanson
R
 2.70 0.66 1.12 2.35 2.44 2.35 2.35 0.0% 59.8% 11.5% 4.1 26.9% 9.5 2.33 1.50 66.7% 1.50 1 0 0.0%
Sonny Gray
R
 4.50 4.19 3.76 4.24 4.06 4.24 4.23 4.4% 65.6% 5.7% 2.2 24.2% 9.2 4.25 1.26 70.2% 1.48 0 0 0.0%
Erick Fedde
R
 3.44 3.18 3.16 4.11 4.23 4.11 4.11 1.4% 60.5% 11.1% 4.3 14.2% 5.5 1.28 1.09 75.6% 1.68 0 0 0.0%
Miles Mikolas
R
 3.77 3.01 2.87 3.61 3.70 3.61 3.61 1.1% 64.4% 7.8% 3.0 14.0% 5.4 1.80 0.93 68.3% 1.05 0 0 0.0%
Andre Pallante
R
 4.11 4.62 4.17 4.85 4.76 4.85 4.86 3.8% 60.3% 7.3% 2.9 14.7% 5.7 2.00 0.95 78.9% 6.77 0 0 0.0%
Michael McGreevy
R
 0.00 -1.43 0.37 2.39 2.38 2.39 2.35 0.0% 62.5% 5.0% 1.6 25.0% 7.9 5.00 1.06 100.0% 1.67 3 0 0.0%
Drew Rom
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%

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 Kansas City 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%
Carlos Estevez
R
 2.29 2.17 2.33 3.10 3.27 3.10 2.62 0.0% 62.3% 11.8% 4.6 21.2% 8.2 1.80 1.42 76.9% 0.86 1 1 100.0%
Lucas Erceg
R
 0.47 -0.46 0.56 1.94 1.90 1.94 1.94 0.0% 66.2% 1.5% 0.5 20.9% 6.6 14.00 0.79 90.0% 2.50 7 1 14.3%
John Schreiber
R
 3.12 4.79 4.35 4.95 4.72 4.95 4.94 5.7% 65.5% 8.1% 3.1 25.7% 9.9 3.17 1.44 91.5% 2.50 15 4 26.7%
Angel Zerpa
L
 6.35 7.87 8.26 5.81 5.42 5.81 5.85 5.0% 62.7% 6.0% 2.6 14.5% 6.4 2.40 1.00 75.8% 9.67 9 5 55.6%
Daniel Lynch
L
 0.90 1.91 1.92 3.95 4.20 3.95 3.80 1.3% 66.9% 8.6% 3.2 12.3% 4.5 1.43 0.85 91.8% 1.77 2 0 0.0%
Chris Stratton
R
 7.94 8.21 8.69 4.16 3.96 4.16 4.17 2.4% 61.0% 9.1% 4.2 18.2% 8.5 2.00 1.41 58.5% 2.38 0 0 0.0%
Steven Cruz
R
 1.32 -0.14 0.79 2.73 2.82 2.73 2.73 0.0% 68.3% 7.8% 2.6 19.6% 6.6 2.50 1.02 70.0% 2.50 5 1 20.0%
Taylor Clarke
R
 0.00 0.15 0.67 1.97 2.08 1.97 1.97 0.0% 65.0% 0.0% 0.0 15.8% 5.1 0.00 0.56 100.0% 1.50 2 0 0.0%
Samuel Sisk
L
 0.00 3.69 3.91 1.39 1.80 1.39 1.61 0.0% 55.1% 18.2% 7.7 45.5% 19.3 2.50 3.00 100.0% 1.00 2 0 0.0%
Hunter Harvey
R
 0.00 -1.86 0.08 0.47 0.37 0.47 0.50 0.0% 64.6% 0.0% 0.0 41.2% 11.8 0.00 1.31 100.0% 2.50 0 0 0.0%
Sam Long
L
 12.86 10.30 11.57 7.24 6.54 7.24 6.85 5.4% 59.7% 13.2% 6.4 15.8% 7.7 1.20 1.57 35.2% 1.40 6 3 50.0%
Kristofer Bubic
L
 1.82 2.74 2.66 2.70 2.77 2.70 2.64 1.4% 68.4% 6.6% 2.5 24.8% 9.3 3.73 1.31 86.7% 2.40 0 0 0.0%
Michael Lorenzen
R
 3.76 4.29 3.82 4.52 4.38 4.52 4.52 4.1% 64.5% 6.7% 2.6 20.1% 7.7 3.00 1.14 80.5% 1.38 0 0 0.0%
Cole Ragans
L
 4.53 3.37 3.10 2.01 2.12 2.01 2.01 2.1% 65.9% 6.7% 2.6 37.3% 14.2 5.54 1.86 63.5% 1.58 0 0 0.0%
Seth Lugo
R
 3.02 3.53 3.18 4.53 4.50 4.53 4.48 4.1% 64.7% 6.4% 2.4 18.0% 6.7 2.80 1.01 83.3% 1.47 0 0 0.0%
Noah Cameron
L
 0.71 0.14 0.76 4.36 4.69 4.36 4.34 2.2% 63.1% 10.9% 3.6 13.0% 4.3 1.20 0.87 106.1% 1.44 0 0 0.0%
Kyle Wright
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.