What years did Jonathan Heasley play?

Jonathan Heasley played in Major League Baseball from 2021 to 2026.

Was Jonathan Heasley a pitcher?

Yes. Jonathan Heasley pitched in the major leagues, recording 5 wins and 91 strikeouts.

What teams has Jonathan Heasley played for?

Jonathan Heasley has played for 3 teams: the Kansas City Royals (2021–2023), the Baltimore Orioles (2024), and the Tampa Bay Rays (2026).

What are Jonathan Heasley's career stats?

In 41 games, Jonathan Heasley has gone 5-12 with a 6.04 ERA, 91 strikeouts, and 143.0 innings pitched.

What position does Jonathan Heasley play?

Jonathan Heasley plays primarily as a pitcher, the position where he has appeared in the most games.

How tall is Jonathan Heasley and how much does he weigh?

Jonathan Heasley is listed at 6 feet 3 inches and 225 pounds.

What number does Jonathan Heasley wear?

Jonathan Heasley wears number 68, according to MLB's 2026 roster data.

What was Jonathan Heasley's career ERA?

Jonathan Heasley finished with a 6.04 career ERA, going 5-12 with 91 strikeouts.

How many strikeouts did Jonathan Heasley have?

Jonathan Heasley recorded 91 career strikeouts.

Jonathan Heasley

Pitcher · Career Stats, Bio & Records (2021-2026)

Jonathan Heasley is a pitcher who has played in Major League Baseball since 2021 for the Kansas City Royals and the Baltimore Orioles, a span of 6 seasons. Across 41 career appearances, he has gone 5-12 with a 6.04 ERA and 91 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 October 25, 2026

Active Player

W–L 5–12

ERA 6.04

WHIP 1.49

SO 91

Pitcher PIV thru 2025 -6069.2

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'3" / 225 lb
Born: 1/27/1997 in Plano, TX, USA
MLB Debut: 2021-09-17
Jersey: #68

Full name: Jonathan Paul Heasley

📊 Compare This Player 📈 View Career Timeline

Career Pitching Statistics

Jonathan Heasley — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
5	12	41	24	0	0	0	143.0	158	96	31	55	91	6.04	-6069.2

Career ERA 6.04 vs. league average 4.16 across their career seasons — 45.1% worse than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Jonathan Heasley — Season-by-Season Pitching
Year	Team	Lg	W	L	G	GS	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2021	KCA	AL	1	1	3	3	14.2	15	8	3	6	4.91	4.27 (-15%)	-648.3
2022	KCA	AL	4	10	21	21	104.0	108	61	47	70	5.28	3.97 (-33%)	-4424.7
2023	KCA	AL	0	0	12	0	15.0	17	12	2	9	7.20	4.33 (-66%)	-996.2
2024	BAL	AL	0	1	4	0	5.1	10	10	3	4	16.88	—	0.0
2026	TB	AL	0	0	1	0	4.0	8	5	0	2	11.25	—	-
Career · 5 seasons			5	12	41	24	143.0	158	96	55	91	6.04	—	-6,069

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

Jonathan Heasley — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
40	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.

Jonathan Heasley — Season-by-Season Batting
Year	Team	Lg	G	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2021	KCA	AL	3	.000	—	—	—	—	0.0
2022	KCA	AL	21	.000	—	—	—	—	0.0
2023	KCA	AL	12	.000	—	—	—	—	0.0
2024	BAL	AL	4	.000	—	—	—	—	0.0
Career · 4 seasons			40	—	—	—	—	—	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

Jonathan Heasley — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	20	0	0	0	0	0	—
Away	20	0	0	0	0	0	—

Pitching — Home / Away

Jonathan Heasley — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	20	69.0	81	52	20	45	6.78
Away	20	70.0	69	39	35	44	5.01

Last 10 Games — Pitching

Jonathan Heasley — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
2024-05-23	BAL	CHW	—	1.0	2	4	4	2	0	0
2024-04-12	BAL	MIL	—	2.0	7	6	6	1	2	2
2024-04-06	BAL	PIT	L	0.1	1	1	0	0	0	0
2024-04-02	BAL	KCR	—	2.0	0	0	0	0	2	0
2023-08-11	KCR	STL	—	1.0	2	2	2	0	0	1
2023-08-06	KCR	PHI	—	2.0	3	2	2	0	1	1
2023-08-03	KCR	NYN	—	1.0	2	2	2	0	0	1
2023-07-26	KCR	CLE	—	1.1	2	3	3	2	2	2
2023-07-25	KCR	CLE	—	1.0	1	0	0	0	0	0
2023-07-21	KCR	NYY	—	1.0	0	0	0	0	1	0

Fielding Statistics

Career Fielding Totals by Position

Jonathan Heasley — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	40	24	9	8	1	1

Season-by-Season Fielding

Jonathan Heasley — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2021	KCA	P	3	3	0	1	0	0
2022	KCA	P	21	21	4	5	1	1
2023	KCA	P	12	0	4	1	0	0
2024	BAL	P	4	0	1	1	0	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Jonathan Heasley — Career Games by Position
Position	Games
Pitcher	40

Jonathan Heasley: the record in brief

The debut date in the bio is September 17, 2021; Jonathan Heasley is an active player, and this profile updates as the season goes on. The team column moves through the Kansas City Royals (2021 through 2023) and the Baltimore Orioles (2024). Heasley played primarily as a pitcher and batted and threw right-handed. The bio adds a birth date on January 27, 1997, in Plano, TX, USA and a listed size of 6'3" and 225 pounds. On the record, Jonathan Heasley was born Jonathan Paul Heasley.

Across 41 games (24 starts), Heasley has recorded 5 wins against 12 losses with a 6.04 ERA. The same table counts 91 strikeouts. Against a 4.16 league ERA for the same seasons, the 6.04 mark was 45.1% worse. Among the heaviest workloads, the lowest ERA was 5.28 in 2022, when the league's was 3.97.

Every defensive appearance on record for Heasley, 40 games, came at pitcher. Fielding on the mound produced 9 putouts and 8 assists against 1 errors.

Heasley's game-by-game log, linked below the splits, holds 80 games from Retrosheet.

Frequently Asked Questions about Jonathan Heasley

What years did Jonathan Heasley play?: Jonathan Heasley played in Major League Baseball from 2021 to 2026.
Was Jonathan Heasley a pitcher?: Yes. Jonathan Heasley pitched in the major leagues, recording 5 wins and 91 strikeouts.
What teams has Jonathan Heasley played for?: Jonathan Heasley has played for 3 teams: the Kansas City Royals (2021–2023), the Baltimore Orioles (2024), and the Tampa Bay Rays (2026).
What are Jonathan Heasley's career stats?: In 41 games, Jonathan Heasley has gone 5-12 with a 6.04 ERA, 91 strikeouts, and 143.0 innings pitched.
What position does Jonathan Heasley play?: Jonathan Heasley plays primarily as a pitcher, the position where he has appeared in the most games.
How tall is Jonathan Heasley and how much does he weigh?: Jonathan Heasley is listed at 6 feet 3 inches and 225 pounds.
What number does Jonathan Heasley wear?: Jonathan Heasley wears number 68, according to MLB's 2026 roster data.
What was Jonathan Heasley's career ERA?: Jonathan Heasley finished with a 6.04 career ERA, going 5-12 with 91 strikeouts.
How many strikeouts did Jonathan Heasley have?: Jonathan Heasley recorded 91 career strikeouts.