What years did J. D. Hammer play?

J. D. Hammer played in Major League Baseball from 2019 to 2021.

Was J. D. Hammer a pitcher?

Yes. J. D. Hammer pitched in the major leagues, recording 2 wins and 35 strikeouts.

How many home runs did J. D. Hammer hit?

J. D. Hammer hit 0 career home runs.

What was J. D. Hammer's career batting average?

J. D. Hammer batted .000 over his career, with 0 hits in 2 at bats.

What was J. D. Hammer's career ERA?

J. D. Hammer finished with a 4.38 career ERA, going 2-1 with 35 strikeouts.

How many strikeouts did J. D. Hammer have?

J. D. Hammer recorded 35 career strikeouts.

J. D. Hammer

Pitcher · Career Stats, Bio & Records (2019-2021)

J. D. Hammer was a pitcher who played in Major League Baseball from 2019 to 2021 for the Philadelphia Phillies, a span of 3 seasons. Across 40 career appearances, he went 2-1 with a 4.38 ERA and 35 strikeouts.

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 8, 2026

W–L 2–1

ERA 4.38

WHIP 1.51

SO 35

Pitcher PIV -589.0

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'3" / 202 lb
Born: 7/12/1994 in Fort Collins, CO, USA
MLB Debut: 2019-05-26
Last Game: 2021-09-16

Full name: John Dale Hammer

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Career Pitching Statistics

J. D. Hammer — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
2	1	40	0	0	0	0	39.0	36	19	5	23	35	4.38	-589.0

Career ERA 4.38 vs. league average 4.39 across their career seasons — near league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

J. D. Hammer — Season-by-Season Pitching
Year	Team	Lg	W	L	G	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2019	PHI	NL	1	0	20	19.0	15	8	12	13	3.79	4.51 (+16%)	-286.8
2021	PHI	NL	1	1	20	20.0	21	11	11	22	4.95	4.27 (-16%)	-302.2
Career · 2 seasons			2	1	40	39.0	36	19	23	35	4.38	—	-589

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

J. D. Hammer — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
40	2	0	0	0	0	0	0	0	0	1	.000	.000	.000	.000	0

Career AVG .000 vs. league average .248 across their career seasons — 100.0% below league average.

Career OBP .000 vs. league average .320 across their career seasons — 100.0% below league average.

Career SLG .000 vs. league average .423 across their career seasons — 100.0% below league average.

Career OPS .000 vs. league average .743 across their career seasons — 100.0% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

J. D. Hammer — Season-by-Season Batting
Year	Team	Lg	G	AB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2019	PHI	NL	20	1	0	.000	—	—	—	—	0.0
2021	PHI	NL	20	1	1	.000	—	—	—	—	0.0
Career · 2 seasons			40	2	1	.000	—	—	—	—	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 (80 games) →

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

Batting — Home / Away

J. D. Hammer — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	24	2	0	0	0	0	.000
Away	16	0	0	0	0	0	—

Pitching — Home / Away

J. D. Hammer — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	24	24.1	25	13	13	20	4.81
Away	16	14.2	11	6	10	15	3.68

Last 10 Games — Pitching

J. D. Hammer — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
2021-09-16	PHI	CHC	—	0.1	4	5	5	1	1	1
2021-09-14	PHI	CHC	—	1.0	0	0	0	2	1	0
2021-09-10	PHI	COL	—	0.2	1	1	1	0	1	1
2021-09-09	PHI	COL	—	0.1	1	0	0	0	0	0
2021-09-03	PHI	MIA	—	0.1	2	2	2	2	0	0
2021-09-02	PHI	WAS	—	1.0	0	0	0	0	2	0
2021-08-29	PHI	AZ	—	0.2	0	0	0	0	0	0
2021-08-26	PHI	AZ	—	1.2	3	2	2	1	1	0
2021-08-24	PHI	TBR	—	1.0	1	0	0	0	2	0
2021-08-17	PHI	AZ	—	2.0	0	0	0	0	4	0

Fielding Statistics

Career Fielding Totals by Position

J. D. Hammer — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	40	0	2	2	1	0

Season-by-Season Fielding

J. D. Hammer — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2019	PHI	P	20	0	0	2	0	0
2021	PHI	P	20	0	2	0	1	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

J. D. Hammer — Career Games by Position
Position	Games
Pitcher	40

Frequently Asked Questions about J. D. Hammer

What years did J. D. Hammer play?: J. D. Hammer played in Major League Baseball from 2019 to 2021.
Was J. D. Hammer a pitcher?: Yes. J. D. Hammer pitched in the major leagues, recording 2 wins and 35 strikeouts.
How many home runs did J. D. Hammer hit?: J. D. Hammer hit 0 career home runs.
What was J. D. Hammer's career batting average?: J. D. Hammer batted .000 over his career, with 0 hits in 2 at bats.
What was J. D. Hammer's career ERA?: J. D. Hammer finished with a 4.38 career ERA, going 2-1 with 35 strikeouts.
How many strikeouts did J. D. Hammer have?: J. D. Hammer recorded 35 career strikeouts.