What years did Jack Leathersich play?

Jack Leathersich played in Major League Baseball from 2015 to 2017.

Was Jack Leathersich a pitcher?

Yes. Jack Leathersich pitched in the major leagues, recording 0 wins and 21 strikeouts.

What was Jack Leathersich's career ERA?

Jack Leathersich finished with a 2.70 career ERA, going 0-1 with 21 strikeouts.

How many strikeouts did Jack Leathersich have?

Jack Leathersich recorded 21 career strikeouts.

Is Jack Leathersich in the Hall of Fame?

No. Jack Leathersich has not been inducted into the National Baseball Hall of Fame.

What teams did Jack Leathersich play for?

Jack Leathersich played for the New York Mets, the Chicago Cubs, and the Pittsburgh Pirates.

Jack Leathersich

Pitcher · Career Stats, Bio & Records (2015-2017)

Jack Leathersich was a pitcher who played in Major League Baseball from 2015 to 2017 for the New York Mets, the Chicago Cubs, and the Pittsburgh Pirates, a span of 3 seasons. Across 24 career appearances, he went 0-1 with a 2.70 ERA and 21 strikeouts. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 342.3.

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 0–1

ERA 2.70

WHIP 1.74

SO 21

Pitcher PIV 342.3

Position: Pitcher
Bats / Throws: R / L
Height / Weight: 5'11" / 205 lb
Born: 7/14/1990 in Beverly, MA, USA
MLB Debut: 2015-04-29
Last Game: 2017-10-01

Full name: John Victor Leathersich

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Career Pitching Statistics

Jack Leathersich — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
0	1	24	0	0	0	0	16.7	16	5	0	13	21	2.70	342.3

Career ERA 2.70 vs. league average 4.16 across their career seasons — 35.1% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Jack Leathersich — Season-by-Season Pitching
Year	Team	Lg	L	G	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2015	NYN	NL	1	17	11.7	12	3	7	14	2.31	3.96 (+42%)	342.3
2017	CHN	NL	0	1	0.7	1	2	4	1	27.00	—	0.0
2017	PIT	NL	0	6	4.3	3	0	2	6	0.00	—	0.0
Career · 3 seasons			1	24	16.2	16	5	13	21	2.70	—	342

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

Jack Leathersich — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
24	0	0	0	0	0	0	0	0	0	0	.000	.000	.000	.000	0

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Jack Leathersich — Season-by-Season Batting
Year	Team	Lg	G	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2015	NYN	NL	17	.000	—	—	—	—	0.0
2017	CHN	NL	1	.000	—	—	—	—	0.0
2017	PIT	NL	6	.000	—	—	—	—	0.0
Career · 3 seasons			24	—	—	—	—	—	0

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 (48 games) →

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

Batting — Home / Away

Jack Leathersich — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	11	0	0	0	0	0	—
Away	13	0	0	0	0	0	—

Pitching — Home / Away

Jack Leathersich — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	11	8.0	7	3	7	8	3.38
Away	13	8.2	9	2	6	13	2.08

Last 10 Games — Pitching

Jack Leathersich — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO
2017-10-01	PIT	WAS	—	0.2	1	0	0	0	1
2017-09-28	PIT	WAS	—	0.2	1	0	0	0	1
2017-09-27	PIT	BAL	—	0.1	0	0	0	0	0
2017-09-23	PIT	STL	—	0.2	0	0	0	0	1
2017-09-17	PIT	CIN	—	1.0	0	0	0	1	2
2017-09-12	PIT	MIL	—	1.0	1	0	0	1	1
2017-07-06	CHC	MIL	—	0.2	1	2	2	4	1
2015-06-20	NYN	ATL	L	1.0	1	1	1	0	3
2015-06-17	NYN	TOR	—	0.1	0	0	0	1	1
2015-06-15	NYN	TOR	—	0.2	0	0	0	1	0

Fielding Statistics

Career Fielding Totals by Position

Jack Leathersich — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	24	0	0	2	0	0

Season-by-Season Fielding

Jack Leathersich — Season-by-Season Fielding
Year	Team	Pos	G	A
2015	NYN	P	17	2
2017	CHN	P	1	0
2017	PIT	P	6	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jack Leathersich — Career Games by Position
Position	Games
Pitcher	24

Frequently Asked Questions about Jack Leathersich

What years did Jack Leathersich play?: Jack Leathersich played in Major League Baseball from 2015 to 2017.
Was Jack Leathersich a pitcher?: Yes. Jack Leathersich pitched in the major leagues, recording 0 wins and 21 strikeouts.
What was Jack Leathersich's career ERA?: Jack Leathersich finished with a 2.70 career ERA, going 0-1 with 21 strikeouts.
How many strikeouts did Jack Leathersich have?: Jack Leathersich recorded 21 career strikeouts.
Is Jack Leathersich in the Hall of Fame?: No. Jack Leathersich has not been inducted into the National Baseball Hall of Fame.
What teams did Jack Leathersich play for?: Jack Leathersich played for the New York Mets, the Chicago Cubs, and the Pittsburgh Pirates.