What years did Hisashi Iwakuma play?

Hisashi Iwakuma played in Major League Baseball from 2012 to 2017.

Was Hisashi Iwakuma a pitcher?

Yes. Hisashi Iwakuma pitched in the major leagues, recording 63 wins and 714 strikeouts.

How many home runs did Hisashi Iwakuma hit?

Hisashi Iwakuma hit 0 career home runs.

What was Hisashi Iwakuma's career batting average?

Hisashi Iwakuma batted .000 over his career, with 0 hits in 11 at bats.

What was Hisashi Iwakuma's career ERA?

Hisashi Iwakuma finished with a 3.42 career ERA, going 63-39 with 714 strikeouts.

How many strikeouts did Hisashi Iwakuma have?

Hisashi Iwakuma recorded 714 career strikeouts.

Hisashi Iwakuma

Pitcher · Career Stats, Bio & Records (2012-2017)

Hisashi Iwakuma was a pitcher who played in Major League Baseball from 2012 to 2017 for the Seattle Mariners, a span of 6 seasons. Across 150 career appearances, he went 63-39 with a 3.42 ERA and 714 strikeouts. Hisashi Iwakuma was an All-Star. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 2429.8.

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 63–39

ERA 3.42

WHIP 1.14

SO 714

Pitcher PIV 2429.8

Position: Pitcher
Bats / Throws: R / R
Height / Weight: 6'3" / 210 lb
Born: 4/12/1981 in Tokyo, Tokyo, Japan
MLB Debut: 2012-04-20
Last Game: 2017-05-03
Awards: All-Star

📊 Compare This Player 📈 View Career Timeline

Career Pitching Statistics

Hisashi Iwakuma — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
63	39	150	136	1	1	2	883.7	825	336	115	185	714	3.42	2429.8

Career ERA 3.42 vs. league average 4.02 across their career seasons — 14.9% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Hisashi Iwakuma — Season-by-Season Pitching
Year	Team	Lg	W	L	G	GS	CG	SHO	SV	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2012	SEA	AL	9	5	30	16	0	0	2	125.3	117	44	43	101	3.16	4.01 (+21%)	-1042.6
2013	SEA	AL	14	6	33	33	0	0	0	219.7	179	65	42	185	2.66	3.87 (+31%)	2419.8
2014	SEA	AL	15	9	28	28	0	0	0	179.0	167	70	21	154	3.52	3.74 (+6%)	2278.5
2015	SEA	AL	9	5	20	20	1	1	0	129.7	117	51	21	111	3.54	3.96 (+11%)	753.3
2016	SEA	AL	16	12	33	33	0	0	0	199.0	218	91	46	147	4.12	4.19 (+2%)	-384.4
2017	SEA	AL	0	2	6	6	0	0	0	31.0	27	15	12	16	4.35	4.36 (avg)	-1594.7
Career · 6 seasons			63	39	150	136	1	1	2	883.2	825	336	185	714	3.42	—	2,430

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

Hisashi Iwakuma — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
150	11	0	0	0	0	0	0	0	1	8	.000	.083	.000	.083	0

Career AVG .000 vs. league average .254 across their career seasons — 100.0% below league average.

Career OBP .083 vs. league average .319 across their career seasons — 73.9% below league average.

Career SLG .000 vs. league average .406 across their career seasons — 100.0% below league average.

Career OPS .083 vs. league average .725 across their career seasons — 88.5% below league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Hisashi Iwakuma — Season-by-Season Batting
Year	Team	Lg	G	AB	BB	SO	AVG	Lg AVG	Lg OBP	Lg SLG	Lg OPS	PIV
2012	SEA	AL	30	0	0	0	.000	—	—	—	—	0.0
2013	SEA	AL	33	3	0	2	.000	—	—	—	—	0.0
2014	SEA	AL	28	4	1	3	.000	—	—	—	—	0.0
2015	SEA	AL	20	2	0	2	.000	—	—	—	—	0.0
2016	SEA	AL	33	2	0	1	.000	—	—	—	—	0.0
2017	SEA	AL	6	0	0	0	.000	—	—	—	—	0.0
Career · 6 seasons			150	11	1	8	.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 (300 games) →

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

Batting — Home / Away

Hisashi Iwakuma — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	77	0	0	0	0	0	—
Away	73	11	0	0	0	0	.000

Pitching — Home / Away

Hisashi Iwakuma — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	77	461.0	424	178	69	393	3.48
Away	73	422.2	401	158	116	321	3.36

Last 10 Games — Pitching

Hisashi Iwakuma — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO	HR
2017-05-03	SEA	LAA	—	5.0	6	3	3	1	4	1
2017-04-27	SEA	DET	—	5.2	3	1	0	1	3	0
2017-04-21	SEA	OAK	L	5.1	5	3	3	4	3	2
2017-04-16	SEA	TEX	—	3.0	7	6	6	0	2	1
2017-04-09	SEA	LAA	—	6.0	2	1	1	3	2	1
2017-04-04	SEA	HOU	L	6.0	4	2	2	3	2	2
2016-10-01	SEA	OAK	—	3.2	9	5	5	1	5	0
2016-09-26	SEA	HOU	—	6.0	4	1	1	2	5	0
2016-09-20	SEA	TOR	L	3.1	8	6	5	1	5	2
2016-09-14	SEA	LAA	W	6.1	5	1	1	3	2	0

Fielding Statistics

Career Fielding Totals by Position

Hisashi Iwakuma — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	150	136	55	102	3	7

Season-by-Season Fielding

Hisashi Iwakuma — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2012	SEA	P	30	16	7	10	1	1
2013	SEA	P	33	33	13	26	1	2
2014	SEA	P	28	28	17	24	1	1
2015	SEA	P	20	20	6	21	0	1
2016	SEA	P	33	33	11	19	0	1
2017	SEA	P	6	6	1	2	0	1

Career Games by Position

Position Diamond

Circle size = games played at each position.

Hisashi Iwakuma — Career Games by Position
Position	Games
Pitcher	150

Awards & Honors

Hisashi Iwakuma — Awards & Honors
Year	Award	Notes
2015	Player of the Week	Week of 2015-08-16

Salary History

Hisashi Iwakuma — Salary History
Year	Team	League	Salary
2016	SEA	AL	$10,976,096
2015	SEA	AL	$7,000,000
2014	SEA	AL	$6,500,000
2013	SEA	AL	$6,500,000
2012	SEA	AL	$1,500,000
Total Career Earnings			$32,476,096

Award Voting History

Hisashi Iwakuma — Award Voting History
Year	Award	League	Finish	Points Won	Points Max	Votes First
2013	Cy Young Award	AL	3rd	73.0	210	0
2013	Most Valuable Player	AL	19th	2.0	420	0

Most Similar Players

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

Career Spans

Hisashi Iwakuma (highlighted) compared to peers across the same era.

Frequently Asked Questions about Hisashi Iwakuma

What years did Hisashi Iwakuma play?: Hisashi Iwakuma played in Major League Baseball from 2012 to 2017.
Was Hisashi Iwakuma a pitcher?: Yes. Hisashi Iwakuma pitched in the major leagues, recording 63 wins and 714 strikeouts.
How many home runs did Hisashi Iwakuma hit?: Hisashi Iwakuma hit 0 career home runs.
What was Hisashi Iwakuma's career batting average?: Hisashi Iwakuma batted .000 over his career, with 0 hits in 11 at bats.
What was Hisashi Iwakuma's career ERA?: Hisashi Iwakuma finished with a 3.42 career ERA, going 63-39 with 714 strikeouts.
How many strikeouts did Hisashi Iwakuma have?: Hisashi Iwakuma recorded 714 career strikeouts.