Buck O'Brien

Pitcher · Career Stats, Bio & Records (1911-1913)

W–L 29–25
ERA 2.62
WHIP 1.27
SO 204
Pitcher PIV 1932.2
Position
Pitcher
Bats / Throws
R / R
Height / Weight
5'10" / 188 lb
Born
5/9/1882 in Brockton, MA, USA
Died
7/25/1959 in Boston, MA, USA
MLB Debut
1911-09-09
Last Game
1913-08-06

Full name: Thomas Joseph O'Brien

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
29 25 64 54 36 4 0 432.0 391 126 3 159 204 2.62 1932.2

Career ERA 2.62 vs. league average 3.27 across their career seasons — 19.6% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1911 BOS AL 5 1 6 5 5 2 0 47.7 30 2 21 31 0.38 3.37 (+89%) 588.7
1912 BOS AL 20 13 37 34 25 2 0 275.7 237 79 90 115 2.58 3.36 (+23%) 726.8
1913 BOS AL 4 9 15 12 6 0 0 90.3 103 37 35 54 3.69 3.07 (-20%) 1173.7
1913 CHA AL 0 2 6 3 0 0 0 18.3 21 8 13 4 3.93 3.07 (-28%) -557.0
Career · 4 seasons 29 25 64 54 36 4 0 432.0 391 126 159 204 2.62 — 1,932

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Career Batting Statistics

G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
64 143 6 20 3 1 0 8 0 9 40 .140 .191 .175 .366 -707

Career AVG .140 vs. league average .265 across their career seasons — 47.2% below league average.

Career OBP .191 vs. league average .332 across their career seasons — 42.6% below league average.

Career SLG .175 vs. league average .354 across their career seasons — 50.6% below league average.

Career OPS .366 vs. league average .686 across their career seasons — 46.7% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1911 BOS AL 6 16 0 2 1 0 0 1 0 0 4 .125 — — — — 0.0
1912 BOS AL 37 94 4 13 1 1 0 6 0 6 27 .138 .268 (-49%) .335 (-43%) .358 (-53%) .694 (-48%) -707.4
1913 BOS AL 15 30 2 5 1 0 0 1 0 3 9 .167 — — — — 0.0
1913 CHA AL 6 3 0 0 0 0 0 0 0 0 0 .000 — — — — 0.0
Career · 4 seasons 64 143 6 20 3 1 0 8 0 9 40 .140 — — — — -707

Lg columns show the league average for that season, with the player's figure as a percentage above or below it. Career totals the seasons listed above.

Postseason Statistics

Playoff Career Batting

G AB R H 2B 3B HR RBI BB SO AVG
2 2 0 0 0 0 0 0 0 2 .000

Playoff Batting by Year

Year Round Team G AB R H 2B 3B HR RBI BB SO AVG
1912 WS BOS 2 2 0 0 0 0 0 0 0 2 .000

Playoff Career Pitching

W L G GS SV IP H ER BB SO ERA
0 2 2 2 0 9.0 12 5 3 4 5.00

Playoff Pitching by Year

Year Round Team W L G GS SV IP H ER BB SO ERA
1912 WS BOS 0 2 2 2 0 9.0 12 5 3 4 5.00

Game Log & Splits

View full game log (128 games) →

Per-game data from Retrosheet (regular season, through 2025).

Batting — Home / Away

SplitGABRHHRRBIAVG
Home326861206.176
Away32740801.108

Pitching — Home / Away

SplitGIPHERBBSOERA
Home32221.120962951142.52
Away32210.01825766932.44

Last 10 Games — Batting

DateTmOppResABRH2B3BHRRBIBBSO
1913-08-06 CHWMINL 000000000
1913-07-29 CHWBOSL 100000011
1913-07-26 CHWBOSL 000000000
1913-07-23 CHWMINL 000000010
1913-07-16 CHWPHAW 000000000
1913-07-11 CHWNYYL 100000000
1913-06-28 BOSNYYL 100000000
1913-06-19 BOSDETW 311100010
1913-06-13 BOSSLAW 200000011
1913-06-04 BOSCHWL 000000000

Last 10 Games — Pitching

DateTmOppDecIPHRERBBSOHR
1913-08-06 CHWMIN — 0.2133100
1913-07-29 CHWBOS L 6.0452710
1913-07-26 CHWBOS — 1.0000020
1913-07-23 CHWMIN — 3.0210110
1913-07-16 CHWPHA — 2.2633100
1913-07-11 CHWNYY L 5.0843300
1913-06-28 BOSNYY — 3.1310210
1913-06-19 BOSDET — 8.01044530
1913-06-13 BOSSLA — 8.0966730
1913-06-04 BOSCHW L 2.0433220

Fielding Statistics

Career Fielding Totals by Position

Position G GS PO A E DP
P 64 0 15 130 5 2

Season-by-Season Fielding

Year Team Pos G GS PO A E DP
1911 BOS P 6 0 3 14 0 1
1912 BOS P 37 0 10 83 5 1
1913 BOS P 15 0 1 29 0 0
1913 CHA P 6 0 1 4 0 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Position Games
Pitcher 64

Most Similar Players

Career comps based on counting + rate stats and primary position. Score is relative — closest peer anchors at ~98%.

Career Spans

Buck O'Brien (highlighted) compared to peers across the same era.

  1. 98
    Wheezer Dell
    19-23, 2.55 ERA
  2. 89
    Doc Watson
    22-21, 2.70 ERA
  3. 86
    Ernie White
    30-21, 2.78 ERA
  4. 81
    Slow Joe Doyle
    22-21, 2.85 ERA
  5. 80
    Bill James
    37-21, 2.28 ERA
  6. 75
    Alex Main
    21-22, 2.77 ERA

Frequently Asked Questions about Buck O'Brien

What years did Buck O'Brien play?
Buck O'Brien played in Major League Baseball from 1911 to 1913.
Was Buck O'Brien a pitcher?
Yes. Buck O'Brien pitched in the major leagues, recording 29 wins and 204 strikeouts.
How many home runs did Buck O'Brien hit?
Buck O'Brien hit 0 career home runs with 20 hits.