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A player page shows one box score, because a hitter and a pitcher share almost no column — which half you get follows the one he appears in. Every rate is built from summed counts, so a batting average is hits over at bats across whatever window you picked rather than an average of nightly averages. Pitchers rank against starters or relievers, which is the split the sport itself draws. A dash means no number for that cell, or a zero in a roster column that counts.

BOS

Aroldis Chapman

Aroldis Chapman tops all 235 relief pitchers in walks and hits per inning, at 0.70.

94th beats 94% of the Relief Pitchers; 1 is the best of however many the row says. Higher is always better, whichever way the stat runs. Red to green by where the placing sits. A stat with no better end is left unpainted.

all 4 shown▶
Playing TimeDefensevs Relief Pitchers▶
Games Pitched67
Games Started0
Innings Pitched61.163rd106/288
Batters Faced22851st141/288
Pitches Thrown91754th133/288
ResultsDefensevs Relief Pitchers▶
Wins583rd34/288
Losses341st144/288
Earned Runs896th12/288
Earned Run Average1.17100th1/235
Runs Allowed996th11/288
Hits Allowed2885th39/288
Hits per 94.1100th2/235
Walks and Hits per Inning0.70100th1/235
Home Runs Allowed382nd39/288
Home Runs per 90.492nd20/235
Strikeouts8593rd20/288
Strikeout Rate37.3%99th3/241
Strikeouts per 912.595th12/235
CommandDefensevs Relief Pitchers▶
Walks Allowed1573rd73/288
Walk Rate6.6%85th38/241
Strikeout to Walk Ratio5.6798th6/241
Walks per 92.289th27/235
Intentional Walks016th194/288
Hit Batters092nd1/288
Wild Pitches66th267/288
Balks059th1/288
Strike Rate70.1%99th4/240
ReliefDefensevs Relief Pitchers▶
Saves3298th5/288
Save Opportunities34
Blown Saves246th136/288
Holds435th174/288
Games Finished43
Inherited Runners10
Inherited Runners Scored0
Inherited Runners Scored Rate0%—
67 games
DateOppIPWLSVHHRKBBERAWHIP
BOSSep 26, 2025DETDET110010200.001.00
BOSSep 23, 2025@TORTOR100100000.000.00
BOSSep 20, 2025@TBTB100100110.001.00
BOSSep 17, 2025ATHATH100020000.002.00
BOSSep 14, 2025NYYNYY100100100.000.00
BOSSep 13, 2025NYYNYY100020009.002.00
BOSSep 10, 2025@ATHATH0.1010200027.006.00
BOSSep 7, 2025@ARIARI100100400.000.00
BOSSep 1, 2025CLECLE100100100.000.00
BOSAug 31, 2025PITPIT100100200.000.00
BOSAug 27, 2025@BALBAL100100300.000.00
BOSAug 25, 2025@BALBAL100100000.000.00
BOSAug 22, 2025@NYYNYY100100200.000.00
BOSAug 21, 2025@NYYNYY100100000.000.00
BOSAug 19, 2025BALBAL100000310.001.00
BOSAug 16, 2025MIAMIA0.100100000.000.00
BOSAug 15, 2025MIAMIA110000100.000.00
BOSAug 9, 2025@SDSD100000000.000.00
BOSAug 4, 2025KCKC100100100.000.00
BOSAug 2, 2025HOUHOU0.200100100.000.00
BOSAug 1, 2025HOUHOU100000100.000.00
BOSJuly 29, 2025@MINMIN0.100100100.000.00
BOSJuly 27, 2025LADLAD0.100000020.006.00
BOSJuly 26, 2025LADLAD100100110.001.00
BOSJuly 23, 2025@PHIPHI1.100011106.750.75
BOSJuly 21, 2025@PHIPHI100010100.001.00
BOSJuly 13, 2025TBTB100100300.000.00
BOSJuly 10, 2025TBTB100110200.001.00
BOSJuly 6, 2025@WSHWSH100010200.001.00
BOSJuly 1, 2025CINCIN100100100.000.00
BOSJune 29, 2025TORTOR100000200.000.00
BOSJune 24, 2025@LAALAA100010310.002.00
BOSJune 20, 2025@SFSF100100200.000.00
BOSJune 18, 2025@SEASEA100000100.000.00
BOSJune 16, 2025@SEASEA100100300.000.00
BOSJune 13, 2025NYYNYY0.200000000.000.00
BOSJune 11, 2025TBTB100100200.000.00
BOSJune 9, 2025TBTB100010200.001.00
BOSJune 8, 2025@NYYNYY0.100100100.000.00
BOSJune 7, 2025@NYYNYY100100100.000.00
BOSJune 3, 2025LAALAA100000100.000.00
BOSJune 1, 2025@ATLATL100100110.001.00
BOSMay 30, 2025@ATLATL100000200.000.00
BOSMay 28, 2025@MILMIL100010100.001.00
BOSMay 27, 2025@MILMIL100020119.003.00
BOSMay 24, 2025BALBAL100000100.000.00
BOSMay 20, 2025NYMNYM100100000.000.00
BOSMay 19, 2025NYMNYM100110100.001.00
BOSMay 17, 2025ATLATL110010310.002.00
BOSMay 14, 2025@DETDET0.2010101113.503.00
BOSMay 13, 2025@DETDET100000100.000.00
BOSMay 11, 2025@KCKC100110000.001.00
BOSMay 9, 2025@KCKC100000200.000.00
BOSMay 7, 2025TEXTEX100111119.002.00
BOSApril 30, 2025@TORTOR100000100.000.00
BOSApril 26, 2025@CLECLE100000200.000.00
BOSApril 21, 2025CWSCWS100011109.001.00
BOSApril 19, 2025CWSCWS100010100.001.00
BOSApril 15, 2025@TBTB0.100100100.000.00
BOSApril 13, 2025@CWSCWS100110200.001.00
BOSApril 12, 2025@CWSCWS0.1010101127.006.00
BOSApril 10, 2025TORTOR100010200.001.00
BOSApril 9, 2025TORTOR100010200.001.00
BOSApril 6, 2025STLSTL110000210.001.00
BOSApril 4, 2025STLSTL0.200100010.001.50
BOSApril 2, 2025@BALBAL100100110.001.00
BOSMarch 27, 2025@TEXTEX110010100.001.00
By season3 seasons
SeasonGGSIPWLSVERAWHIPHHRKBB
2026BOS5305034351.981.163537123
2025BOS67061.153321.170.702838515
2024PIT68061.255143.791.354459839

About MLB Research

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Every number the site holds for a Major League team and the players who played for it, in one place. Pick a club, a season and a set of games, and read it. Nothing here needs an account.

Where the numbers come from

The same tables the boards read, resolved through one shared definition per stat. A rate is computed over the whole window rather than averaged across games, so a season figure is not the mean of the nightly ones.