What years did Roy Mahaffey play?

Roy Mahaffey played in Major League Baseball from 1926 to 1936.

Was Roy Mahaffey a pitcher?

Yes. Roy Mahaffey pitched in the major leagues, recording 67 wins and 365 strikeouts.

How many home runs did Roy Mahaffey hit?

Roy Mahaffey hit 4 career home runs with 73 hits.

What was Roy Mahaffey's career batting average?

Roy Mahaffey batted .184 over his career, with 73 hits in 396 at bats.

How many RBI did Roy Mahaffey have?

Roy Mahaffey drove in 33 runs in his career.

What was Roy Mahaffey's career ERA?

Roy Mahaffey finished with a 5.01 career ERA, going 67-49 with 365 strikeouts.

Roy Mahaffey

Pitcher · Career Stats, Bio & Records (1926-1936)

Roy Mahaffey was a pitcher who played in Major League Baseball from 1926 to 1936 for the Pittsburgh Pirates, the Philadelphia Athletics, and the St. Louis Browns, a span of 11 seasons. Across 224 career appearances, he went 67-49 with a 5.01 ERA and 365 strikeouts. He also batted .184 with 4 home runs.

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 October 12, 2026

W–L 67–49

ERA 5.01

WHIP 1.55

SO 365

Pitcher PIV -16789.8

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'0" / 180 lb
Born: 2/9/1904 in Belton, SC, USA
Died: 7/23/1969 in Anderson, SC, USA
MLB Debut: 1926-08-31
Last Game: 1936-07-28

Full name: Lee Roy Mahaffey

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Career Pitching Statistics

Roy Mahaffey — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
67	49	224	128	45	0	5	1056.0	1,181	588	84	452	365	5.01	-16789.8

Career ERA 5.01 vs. league average 4.25 across their career seasons — 17.8% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Roy Mahaffey Stats, Bio & Career Records
Year	Team	Lg	W	L	G	GS	CG	SV	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
1926	PIT	NL	0	0	4	0	0	0	4.2	5	0	1	3	0.00	—	0.0
1927	PIT	NL	1	0	2	1	0	0	9.1	9	8	9	4	7.71	4.08 (-89%)	0.0
1930	PHA	AL	9	5	33	16	6	0	152.2	186	85	53	38	5.01	4.80 (-4%)	-3023.0
1931	PHA	AL	15	4	30	20	8	2	162.1	161	76	82	59	4.21	4.10 (-3%)	-2450.6
1932	PHA	AL	13	13	37	28	13	0	222.2	245	126	96	106	5.09	4.13 (-23%)	-5485.4
1933	PHA	AL	13	10	33	23	9	0	179.1	198	103	74	66	5.17	3.86 (-34%)	63.9
1934	PHA	AL	6	7	37	14	3	2	129.0	142	77	55	37	5.37	4.29 (-25%)	-2146.5
1935	PHA	AL	8	4	27	17	5	0	136.0	153	59	42	39	3.90	4.35 (+10%)	-1216.8
1936	SLA	AL	2	6	21	9	1	1	60.0	82	54	40	13	8.10	4.59 (-77%)	-2531.3
Career · 9 seasons			67	49	224	128	45	5	1,056.0	1,181	588	452	365	5.01	—	-16,790

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

Roy Mahaffey — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
224	396	28	73	9	1	4	33	0	14	139	.184	.212	.242	.455	-2,278

Career AVG .184 vs. league average .280 across their career seasons — 34.2% below league average.

Career OBP .212 vs. league average .343 across their career seasons — 38.1% below league average.

Career SLG .242 vs. league average .396 across their career seasons — 38.9% below league average.

Career OPS .455 vs. league average .739 across their career seasons — 38.5% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Roy Mahaffey Stats, Bio & Career Records
Year	Team	Lg	G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
1926	PIT	NL	4	2	0	0	0	0	0	0	0	0	.000	—	—	—	—	0.0
1927	PIT	NL	2	5	0	2	0	0	0	1	0	3	.400	—	—	—	—	0.0
1930	PHA	AL	33	59	2	7	1	0	1	7	0	21	.119	.293 (-60%)	.354 (-67%)	.429 (-57%)	.784 (-61%)	-622.2
1931	PHA	AL	30	63	7	12	2	0	2	8	4	25	.190	.276 (-31%)	.338 (-29%)	.388 (-18%)	.726 (-23%)	-247.5
1932	PHA	AL	37	87	7	15	1	1	1	6	3	37	.172	.275 (-37%)	.335 (-40%)	.391 (-38%)	.726 (-39%)	-559.5
1933	PHA	AL	33	65	4	14	1	0	0	6	2	23	.215	.270 (-20%)	.329 (-28%)	.377 (-39%)	.707 (-34%)	-339.6
1934	PHA	AL	37	48	5	13	2	0	0	4	2	5	.271	—	—	—	—	-128.7
1935	PHA	AL	27	51	3	9	1	0	0	1	2	18	.176	.279 (-37%)	.342 (-39%)	.399 (-51%)	.742 (-46%)	-380.2
1936	SLA	AL	21	16	0	1	1	0	0	0	1	7	.062	—	—	—	—	0.0
Career · 9 seasons			224	396	28	73	9	1	4	33	14	139	.184	—	—	—	—	-2,278

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

Roy Mahaffey — Playoff Career Batting
G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG
1	0	0	0	0	0	0	0	0	0	.000

Playoff Batting by Year

Roy Mahaffey — Playoff Batting by Year
Year	Round	Team	G	AB	R	H	2B	3B	HR	RBI	BB	SO	AVG
1931	WS	PHA	1	0	0	0	0	0	0	0	0	0	.000

Playoff Career Pitching

Roy Mahaffey — Playoff Career Pitching
W	L	G	GS	SV	IP	H	ER	BB	SO	ERA
0	0	1	0	0	1.0	1	1	1	0	9.00

Playoff Pitching by Year

Roy Mahaffey — Playoff Pitching by Year
Year	Round	Team	W	L	G	GS	SV	IP	H	ER	BB	SO	ERA
1931	WS	PHA	0	0	1	0	0	1.0	1	1	1	0	9.00

Game Log & Splits

View full game log (448 games) →

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

Batting — Home / Away

Roy Mahaffey — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	110	177	14	36	2	18	.203
Away	114	218	14	36	2	15	.165

Pitching — Home / Away

Roy Mahaffey — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	110	518.1	563	289	215	201	5.02
Away	114	537.2	618	297	237	168	4.97

Last 10 Games — Batting

Roy Mahaffey — Last 10 Games — Batting
Date	Tm	Opp	Res	AB	BB	SO
1936-07-28	SLA	BOS	L	0	0	0
1936-07-23	SLA	NYY	L	1	0	1
1936-07-18	SLA	NYY	L	0	1	0
1936-07-15	SLA	BOS	L	2	0	2
1936-07-02	SLA	CLE	L	1	0	0
1936-06-23	SLA	MIN	L	0	0	0
1936-06-17	SLA	PHA	W	0	0	0
1936-06-16	SLA	PHA	L	0	0	0
1936-06-08	SLA	NYY	L	0	0	0
1936-06-02	SLA	MIN	L	0	0	0

Last 10 Games — Pitching

Roy Mahaffey — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
1936-07-28	SLA	BOS	—	1.0	0	0	0	1	0	0
1936-07-23	SLA	NYY	—	2.1	2	3	3	3	0	0
1936-07-18	SLA	NYY	L	3.2	6	7	4	4	1	0
1936-07-15	SLA	BOS	L	6.0	7	4	3	3	0	1
1936-07-02	SLA	CLE	L	3.0	5	6	6	3	0	1
1936-06-23	SLA	MIN	—	1.0	3	2	2	0	0	0
1936-06-17	SLA	PHA	—	2.0	5	4	3	0	1	0
1936-06-16	SLA	PHA	—	2.0	3	0	0	0	1	0
1936-06-08	SLA	NYY	—	2.0	1	1	1	2	2	0
1936-06-02	SLA	MIN	—	2.0	1	0	0	0	0	0

Fielding Statistics

Career Fielding Totals by Position

Roy Mahaffey — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	224	0	34	152	12	11

Season-by-Season Fielding

Roy Mahaffey — Season-by-Season Fielding
Year	Team	Pos	G	PO	A	E	DP
1926	PIT	P	4	0	0	1	0
1927	PIT	P	2	0	1	0	0
1930	PHA	P	33	5	25	2	4
1931	PHA	P	30	4	19	1	0
1932	PHA	P	37	11	35	3	3
1933	PHA	P	33	7	29	1	1
1934	PHA	P	37	5	19	2	0
1935	PHA	P	27	2	21	1	3
1936	SLA	P	21	0	3	1	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Roy Mahaffey Stats, Bio & Career Records
Position	Games
Pitcher	224

Most Similar Players

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

Career Spans

Roy Mahaffey (highlighted) compared to peers across the same era.

Roy Mahaffey: the record in brief

Roy Mahaffey played a first major league game on August 31, 1926 and a last one on July 28, 1936. The season rows list, in order, the Pittsburgh Pirates (1926 to 1927), the Philadelphia Athletics (1930 through 1935), and the St. Louis Browns (1936). Mahaffey played primarily as a pitcher and batted and threw right-handed. The bio adds a birth date on February 9, 1904, in Belton, SC, USA and a listed size of 6'0" and 180 pounds. Mahaffey's death is recorded on July 23, 1969, in Anderson, SC, USA. The given name on file is Lee Roy Mahaffey.

Mahaffey went 67-49 with a 5.01 ERA in 224 games, 128 of them starts. Mahaffey had 365 strikeouts and 45 complete games. The league ERA over Mahaffey's seasons was 4.25, so the 5.01 figure ran 17.8% worse than average. No season topped the 15 wins of 1931. 1932 produced Mahaffey's most strikeouts, 106.

Frequently Asked Questions about Roy Mahaffey

What years did Roy Mahaffey play?: Roy Mahaffey played in Major League Baseball from 1926 to 1936.
Was Roy Mahaffey a pitcher?: Yes. Roy Mahaffey pitched in the major leagues, recording 67 wins and 365 strikeouts.
How many home runs did Roy Mahaffey hit?: Roy Mahaffey hit 4 career home runs with 73 hits.
What was Roy Mahaffey's career batting average?: Roy Mahaffey batted .184 over his career, with 73 hits in 396 at bats.
How many RBI did Roy Mahaffey have?: Roy Mahaffey drove in 33 runs in his career.
What was Roy Mahaffey's career ERA?: Roy Mahaffey finished with a 5.01 career ERA, going 67-49 with 365 strikeouts.