Bob Groom

Pitcher · Career Stats, Bio & Records (1909-1918)

Bob Groom was a pitcher who played in Major League Baseball from 1909 to 1918 for 4 teams, including the Washington Senators, a span of 10 seasons. Across 367 career appearances, he went 119-150 with a 3.10 ERA and 1,159 strikeouts. He also batted .128 with 0 home runs. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 6379.9.

W (Wins):
Games credited to a pitcher whose team took a lead it never surrendered while he was the pitcher of record.
ERA (Earned Run Average):
Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
SO (Strikeouts):
For a batter, times retired on a third strike; for a pitcher, batters retired on a third strike.
WHIP (Walks and Hits per Inning Pitched):
Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.

Data updated

W–L 119–150
ERA 3.10
WHIP 1.28
SO 1,159
Pitcher PIV 6379.9
Position
Pitcher
Bats / Throws
R / R
Height / Weight
6'2" / 175 lb
Born
9/12/1884 in Belleville, IL, USA
Died
2/19/1948 in Belleville, IL, USA
MLB Debut
1909-04-13
Last Game
1918-07-20

Full name: Robert Groom

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Career Pitching Statistics

Bob Groom — Career Pitching Statistics
W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
119 150 367 288 157 22 13 2336.1 2,205 806 49 783 1,159 3.10 6379.9

Career ERA 3.10 vs. league average 2.92 across their career seasons — 6.2% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Bob Groom Stats, Bio & Career Records
Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
1909 WS1 AL 7 26 44 31 17 1 0 260.2 218 83 105 131 2.87 2.55 (-13%) -961.4
1910 WS1 AL 12 17 34 30 22 3 0 257.2 244 79 77 98 2.76 2.79 (+1%) -1337.9
1911 WS1 AL 13 17 37 32 20 2 2 254.2 280 108 67 135 3.82 3.37 (-13%) 1956.1
1912 WS1 AL 24 13 43 40 28 2 1 316.0 287 92 94 179 2.62 3.36 (+22%) 4790.8
1913 WS1 AL 16 16 37 36 17 4 0 264.1 258 95 81 156 3.23 3.07 (-6%) 2011.9
1914 SLF FL 13 20 42 34 23 1 1 280.2 281 101 75 167 3.24 2.93 (-11%) 2956.5
1915 SLF FL 11 11 37 26 11 4 2 209.0 200 76 73 111 3.27 2.90 (-13%) 502.9
1916 SLA AL 13 9 41 26 8 1 4 217.1 174 62 98 92 2.57 2.78 (+8%) -1097.6
1917 SLA AL 8 19 38 28 11 4 3 232.2 193 76 95 82 2.94 2.69 (-9%) -1997.0
1918 CLE AL 2 2 14 5 0 0 0 43.1 70 34 18 8 7.06 2.83 (-150%) -444.3
Career · 10 seasons 119 150 367 288 157 22 13 2,336.1 2,205 806 783 1,159 3.10 — 6,380

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

Bob Groom — Career Batting Statistics
G AB R H 2B 3B HR RBI SB BB SO AVG OBP SLG OPS PIV
369 764 49 98 16 3 0 35 3 37 251 .128 .170 .157 .327 -5,614

Career AVG .128 vs. league average .255 across their career seasons — 49.6% below league average.

Career OBP .170 vs. league average .321 across their career seasons — 47.1% below league average.

Career SLG .157 vs. league average .335 across their career seasons — 53.1% below league average.

Career OPS .327 vs. league average .656 across their career seasons — 50.2% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Bob Groom Stats, Bio & Career Records
Year Team Lg G AB R H 2B 3B HR RBI SB BB SO AVG Lg AVG Lg OBP Lg SLG Lg OPS PIV
1909 WS1 AL 46 88 1 8 1 0 0 2 0 0 38 .091 .244 (-63%) .306 (-70%) .312 (-67%) .618 (-69%) -847.7
1910 WS1 AL 34 92 4 11 0 0 0 4 1 2 28 .120 .249 (-52%) .317 (-56%) .326 (-63%) .644 (-60%) -799.8
1911 WS1 AL 37 82 8 11 1 0 0 2 0 6 23 .134 .266 (-50%) .336 (-43%) .356 (-59%) .693 (-51%) -644.5
1912 WS1 AL 43 103 11 12 1 0 0 6 0 7 34 .117 .268 (-57%) .335 (-46%) .358 (-65%) .694 (-56%) -884.1
1913 WS1 AL 37 92 7 15 4 2 0 8 0 6 24 .163 .259 (-37%) .325 (-34%) .345 (-28%) .670 (-31%) -452.7
1914 SLF FL 42 94 5 15 2 1 0 4 0 5 28 .160 .255 (-37%) .322 (-37%) .339 (-40%) .661 (-39%) -554.6
1915 SLF FL 37 66 3 10 2 0 0 4 1 4 24 .152 .250 (-40%) .318 (-37%) .332 (-45%) .651 (-41%) -401.7
1916 SLA AL 41 63 5 7 3 0 0 3 1 4 20 .111 .248 (-55%) .314 (-48%) .326 (-51%) .640 (-50%) -457.1
1917 SLA AL 38 72 4 8 2 0 0 2 0 3 27 .111 .248 (-55%) .312 (-53%) .323 (-57%) .635 (-55%) -571.9
1918 CLE AL 14 12 1 1 0 0 0 0 0 0 5 .083 — — — — 0.0
Career · 10 seasons 369 764 49 98 16 3 0 35 3 37 251 .128 — — — — -5,614

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.

Game Log & Splits

View full game log (737 games) →

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

Batting — Home / Away

Bob Groom — Batting — Home / Away
SplitGABRHHRRBIAVG
Home1773482246020.132
Away1934132752022.126

Pitching — Home / Away

Bob Groom — Pitching — Home / Away
SplitGIPHERBBSOERA
Home1761130.210513613685662.87
Away1911195.211564044166063.04

Last 10 Games — Batting

Bob Groom — Last 10 Games — Batting
DateTmOppResABRH2B3BHRRBIBBSO
1918-07-20 CLEPHAL 000000000
1918-07-13 CLENYYL 000000000
1918-07-04 CLESLAW 100000000
1918-07-02 CLESLAW 000000000
1918-06-30 CLEDETL 000000000
1918-06-14 CLEPHAW 100000001
1918-06-07 CLEBOSW 200000002
1918-06-01 CLEMINL 000000000
1918-05-26 CLENYYL 100000000
1918-05-20 CLEBOSL 100000000

Last 10 Games — Pitching

Bob Groom — Last 10 Games — Pitching
DateTmOppDecIPHRERBBSOHR
1918-07-20 CLEPHA — 2.0655010
1918-07-13 CLENYY — 2.0200010
1918-07-04 CLESLA — 2.0233210
1918-07-02 CLESLA W 2.0000000
1918-06-30 CLEDET — 2.0010100
1918-06-14 CLEPHA — 4.0922110
1918-06-07 CLEBOS — 5.1533120
1918-06-01 CLEMIN — 2.0332000
1918-05-26 CLENYY — 3.1631110
1918-05-20 CLEBOS — 3.0644000

Fielding Statistics

Career Fielding Totals by Position

Bob Groom — Career Fielding Totals by Position
Position G GS PO A E DP
OF 2 2 2 0 1 0
P 367 61 98 685 52 18

Season-by-Season Fielding

Bob Groom — Season-by-Season Fielding
Year Team Pos G GS PO A E DP
1909 WS1 OF 2 2 2 0 1 0
1909 WS1 P 44 31 10 98 12 3
1910 WS1 P 34 30 10 77 6 0
1911 WS1 P 37 0 8 73 5 0
1912 WS1 P 43 0 13 77 9 2
1913 WS1 P 37 0 15 78 5 3
1914 SLF P 42 0 18 74 6 3
1915 SLF P 37 0 5 63 2 2
1916 SLA P 41 0 10 72 6 2
1917 SLA P 38 0 9 59 1 3
1918 CLE P 14 0 0 14 0 0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Bob Groom Stats, Bio & Career Records
Position Games
Pitcher 367
Right Field 2

Most Similar Players

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

Career Spans

Bob Groom (highlighted) compared to peers across the same era.

  1. 98
    Tom Hughes
    132-174, 3.09 ERA
  2. 96
    Ray Caldwell
    133-120, 3.22 ERA
  3. 87
    Earl Hamilton
    116-147, 3.16 ERA
  4. 87
    Lefty Tyler
    127-116, 2.95 ERA
  5. 82
    Joaquin Andujar
    127-118, 3.58 ERA
  6. 81
    Bob Rush
    127-152, 3.65 ERA

Bob Groom: the record in brief

Between the debut on April 13, 1909 and the final game on July 20, 1918, Bob Groom built the record summarized on this page. Groom played for the Washington Senators (1909 through 1913), the St. Louis Terriers (1914 through 1915), the St. Louis Browns (1916 through 1917), and the Cleveland Indians (1918). At 175 pounds on a 6-foot-2 frame, Groom is listed as a pitcher. The bio says Groom batted and threw right-handed. The recorded birth is September 12, 1884, in Belleville, IL, USA. Groom's death is recorded on February 19, 1948, in Belleville, IL, USA. The given name on file is Robert Groom.

Groom went 119-150 with a 3.10 ERA in 367 games, 288 of them starts. Also on Groom's record: 1,159 strikeouts, 157 complete games, 22 shutouts, and 13 saves. The league ERA over Groom's seasons was 2.92, so the 3.10 figure ran 6.2% worse than average. No season topped the 24 wins of 1912.

Frequently Asked Questions about Bob Groom

What years did Bob Groom play?
Bob Groom played in Major League Baseball from 1909 to 1918.
Was Bob Groom a pitcher?
Yes. Bob Groom pitched in the major leagues, recording 119 wins and 1159 strikeouts.
How many home runs did Bob Groom hit?
Bob Groom hit 0 career home runs with 98 hits.
What teams did Bob Groom play for?
Bob Groom played for 4 teams: the Washington Senators (1909–1913), the St. Louis Terriers (1914–1915), the St. Louis Browns (1916–1917), and the Cleveland Indians (1918).
What were Bob Groom's career stats?
In 367 games, Bob Groom went 119-150 with a 3.10 ERA, 1,159 strikeouts, 2,336.1 innings pitched, and 13 saves. At the plate he had 98 hits and 0 home runs.
What position did Bob Groom play?
Bob Groom played primarily as a pitcher, the position where he appeared in the most games.
How tall was Bob Groom and how much did he weigh?
Bob Groom was listed at 6 feet 2 inches and 175 pounds.
What was Bob Groom's career ERA?
Bob Groom finished with a 3.10 career ERA, going 119-150 with 1,159 strikeouts.
How many strikeouts did Bob Groom have?
Bob Groom recorded 1,159 career strikeouts.
Is Bob Groom in the Hall of Fame?
No. Bob Groom has not been inducted into the National Baseball Hall of Fame.