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 was Bob Groom's career batting average?

Bob Groom batted .128 over his career, with 98 hits in 764 at bats.

How many RBI did Bob Groom have?

Bob Groom drove in 35 runs in his career.

What was Bob Groom's career ERA?

Bob Groom finished with a 3.10 career ERA, going 119-150 with 1,159 strikeouts.

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 September 9, 2026

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	2336.3	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	260.7	218	83	105	131	2.87	2.55 (-13%)	-961.4
1910	WS1	AL	12	17	34	30	22	3	0	257.7	244	79	77	98	2.76	2.79 (+1%)	-1337.9
1911	WS1	AL	13	17	37	32	20	2	2	254.7	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	264.3	258	95	81	156	3.23	3.07 (-6%)	2011.9
1914	SLF	FL	13	20	42	34	23	1	1	280.7	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	217.3	174	62	98	92	2.57	2.78 (+8%)	-1097.6
1917	SLA	AL	8	19	38	28	11	4	3	232.7	193	76	95	82	2.94	2.69 (-9%)	-1997.0
1918	CLE	AL	2	2	14	5	0	0	0	43.3	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	RBI	SB	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
1909	WS1	AL	46	88	1	8	1	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	4	1	2	28	.120	.249 (-52%)	.317 (-56%)	.326 (-63%)	.644 (-60%)	-799.8
1911	WS1	AL	37	82	8	11	1	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	6	0	7	34	.117	.268 (-57%)	.335 (-46%)	.358 (-65%)	.694 (-56%)	-884.1
1913	WS1	AL	37	92	7	15	4	2	8	0	6	24	.163	.259 (-37%)	.325 (-34%)	.345 (-28%)	.670 (-31%)	-452.7
1914	SLF	FL	42	94	5	15	2	1	4	0	5	28	.160	.255 (-37%)	.322 (-37%)	.339 (-40%)	.661 (-39%)	-554.6
1915	SLF	FL	37	66	3	10	2	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	3	1	4	20	.111	.248 (-55%)	.314 (-48%)	.326 (-51%)	.640 (-50%)	-457.1
1917	SLA	AL	38	72	4	8	2	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	5	.083	—	—	—	—	0.0
Career · 10 seasons			369	764	49	98	16	3	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
Split	G	AB	R	H	HR	RBI	AVG
Home	177	348	22	46	0	20	.132
Away	193	413	27	52	0	22	.126

Pitching — Home / Away

Bob Groom — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	176	1130.2	1051	361	368	566	2.87
Away	191	1195.2	1156	404	416	606	3.04

Last 10 Games — Batting

Bob Groom — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	SO
1918-07-20	CLE	PHA	L	0	0
1918-07-13	CLE	NYY	L	0	0
1918-07-04	CLE	SLA	W	1	0
1918-07-02	CLE	SLA	W	0	0
1918-06-30	CLE	DET	L	0	0
1918-06-14	CLE	PHA	W	1	1
1918-06-07	CLE	BOS	W	2	2
1918-06-01	CLE	MIN	L	0	0
1918-05-26	CLE	NYY	L	1	0
1918-05-20	CLE	BOS	L	1	0

Last 10 Games — Pitching

Bob Groom — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO
1918-07-20	CLE	PHA	—	2.0	6	5	5	0	1
1918-07-13	CLE	NYY	—	2.0	2	0	0	0	1
1918-07-04	CLE	SLA	—	2.0	2	3	3	2	1
1918-07-02	CLE	SLA	W	2.0	0	0	0	0	0
1918-06-30	CLE	DET	—	2.0	0	1	0	1	0
1918-06-14	CLE	PHA	—	4.0	9	2	2	1	1
1918-06-07	CLE	BOS	—	5.1	5	3	3	1	2
1918-06-01	CLE	MIN	—	2.0	3	3	2	0	0
1918-05-26	CLE	NYY	—	3.1	6	3	1	1	1
1918-05-20	CLE	BOS	—	3.0	6	4	4	0	0

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.

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 was Bob Groom's career batting average?: Bob Groom batted .128 over his career, with 98 hits in 764 at bats.
How many RBI did Bob Groom have?: Bob Groom drove in 35 runs in his career.
What was Bob Groom's career ERA?: Bob Groom finished with a 3.10 career ERA, going 119-150 with 1,159 strikeouts.