Jack Dunleavy

Born: 9/14/1879 in Harrison, NJ, USA

Died: 4/11/1944 in South Norwalk, CT, USA

MLB Debut: 1903-05-30 | Final Game: 1905-10-08

Bats: L | Throws: L | Height: 5'6" | Weight: 167 lbs

Full name: John Francis Dunleavy

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Biography

Jack Dunleavy was a professional baseball pitcher who played in the early 1900s, a time when the game was evolving with the rise of more dynamic pitching styles and strategies. Born in 1879, Dunleavy made his Major League debut on May 30, 1903, and continued to compete until October 8, 1905. Over the course of his brief career, he compiled a record of 7 wins and 12 losses while maintaining an earned run average (ERA) of 4.18. He struck out 79 batters during his time on the mound, showcasing his ability to retire hitters with his pitching prowess. Dunleavy's career unfolded during the transition from the deadball era to a more offensive-minded approach in baseball. While he never achieved significant fame or enduring prominence, his contributions to the teams he played for reflected the competitive spirit of the time. With no recorded saves, Dunleavy primarily served as a starting pitcher, and his statistics provide a glimpse into the challenges faced by hurlers of his era. Despite the brevity of his career, he remains a part of the rich tapestry of early 20th-century baseball history.

Career Pitching Statistics

W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
7	12	21	18	14	0	0	157.0	164	73	6	80	79	4.18	0

Career ERA 4.18 vs. league average 2.87 across their career seasons — 46.0% worse than league average.

Season-by-Season Pitching

Year	Team	Lg	W	L	G	GS	CG	SHO	SV	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
1903	STL	NL	6	8	14	13	9	0	0	102.0	101	46	57	51	4.06	3.10 (-31%)	-
1904	STL	NL	1	4	7	5	5	0	0	55.0	63	27	23	28	4.42	2.66 (-66%)	-

Career Batting Statistics

G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
231	800	98	193	18	14	2	49	33	84	119	0.241	0.318	0.306	0.624	-29.2

Career AVG .241 vs. league average .252 across their career seasons — near league average.

Career OBP .318 vs. league average .308 across their career seasons — near league average.

Career SLG .306 vs. league average .330 across their career seasons — 7.1% below league average.

Career OPS 0.624 vs. league average 0.638 across their career seasons — near league average.

Season-by-Season Batting

Year	Team	Lg	G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
1903	STL	NL	61	193	23	48	3	3	0	10	10	13	34	0.249	.261 (-5%)	.316 (-3%)	.345 (-15%)	.662 (-9%)	-265.9
1904	STL	NL	51	172	23	40	7	3	1	14	8	16	25	0.233	.246 (-6%)	.300 (+1%)	.321 (+1%)	.622 (+1%)	53.1
1905	STL	NL	119	435	52	105	8	8	1	25	15	55	60	0.241	.248 (-3%)	.307 (+7%)	.322 (-6%)	.629 (avg)	183.6