Was Dae-Sung Koo a pitcher?

Yes. Dae-Sung Koo pitched in the major leagues, recording 0 wins and 23 strikeouts.

How many home runs did Dae-Sung Koo hit?

Dae-Sung Koo hit 0 career home runs with 1 hit.

What teams did Dae-Sung Koo play for?

Dae-Sung Koo played for one team, the New York Mets (2005).

What were Dae-Sung Koo's career stats?

In 33 games, Dae-Sung Koo went 0-0 with a 3.91 ERA, 23 strikeouts, and 23.0 innings pitched.

What was Dae-Sung Koo's salary?

Dae-Sung Koo's recorded salary was $450,000 in 2005.

What position did Dae-Sung Koo play?

Dae-Sung Koo played primarily as a pitcher, the position where he appeared in the most games.

How tall was Dae-Sung Koo and how much did he weigh?

Dae-Sung Koo was listed at 6 feet 1 inch and 185 pounds.

What was Dae-Sung Koo's career ERA?

Dae-Sung Koo finished with a 3.91 career ERA, going 0-0 with 23 strikeouts.

How many strikeouts did Dae-Sung Koo have?

Dae-Sung Koo recorded 23 career strikeouts.

Is Dae-Sung Koo in the Hall of Fame?

No. Dae-Sung Koo has not been inducted into the National Baseball Hall of Fame.

Dae-Sung Koo

Pitcher · Career Stats, Bio & Records (2005)

Dae-Sung Koo was a pitcher who played in Major League Baseball in 2005 for the New York Mets. Across 33 career appearances, he went 0-0 with a 3.91 ERA and 23 strikeouts. His career Pitcher PIV — Baseball Data Hub's era-adjusted measure of pitching impact — is 106.3.

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 October 25, 2026

W–L 0–0

ERA 3.91

WHIP 1.52

SO 23

Pitcher PIV 106.3

Position: Pitcher
Bats / Throws: L / L
Height / Weight: 6'1" / 185 lb
Born: 8/2/1969 in Daejeon, Daejeon, South Korea
MLB Debut: 2005-04-04
Last Game: 2005-08-20

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Career Pitching Statistics

Dae-Sung Koo — Career Pitching Statistics
W	L	G	GS	CG	SHO	SV	IP	H	ER	HR	BB	SO	ERA	Pitcher PIV
0	0	33	0	0	0	0	23.0	22	10	2	13	23	3.91	106.3

Career ERA 3.91 vs. league average 4.29 across their career seasons — 8.8% better than league average.

Season-by-Season Pitching

Pitching Career Arc

Click a stat to plot it across every season.

Dae-Sung Koo — Season-by-Season Pitching
Year	Team	Lg	W	L	G	GS	CG	SHO	SV	IP	H	ER	BB	SO	ERA	Lg ERA	Pitcher PIV
2005	NYN	NL	0	0	33	0	0	0	0	23.0	22	10	13	23	3.91	4.29 (+9%)	106.3
Career · 1 season			0	0	33	0	0	0	0	23.0	22	10	13	23	3.91	—	106

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

Dae-Sung Koo — Career Batting Statistics
G	AB	R	H	2B	3B	HR	RBI	SB	BB	SO	AVG	OBP	SLG	OPS	PIV
33	2	1	1	1	0	0	0	0	0	1	.500	.500	1.000	1.500	0

Career AVG .500 vs. league average .264 across their career seasons — +89.1% above league average.

Career OBP .500 vs. league average .330 across their career seasons — +51.4% above league average.

Career SLG 1.000 vs. league average .419 across their career seasons — +138.7% above league average.

Career OPS 1.500 vs. league average .749 across their career seasons — +100.2% above league average.

Season-by-Season Batting

Career Arc

Click a stat to plot it across every season.

Dae-Sung Koo — 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
2005	NYN	NL	33	2	1	1	1	0	0	0	0	0	1	.500	—	—	—	—	0.0
Career · 1 season			33	2	1	1	1	0	0	0	0	0	1	.500	—	—	—	—	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 (66 games) →

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

Batting — Home / Away

Dae-Sung Koo — Batting — Home / Away
Split	G	AB	R	H	HR	RBI	AVG
Home	20	2	1	1	0	0	.500
Away	13	0	0	0	0	0	—

Pitching — Home / Away

Dae-Sung Koo — Pitching — Home / Away
Split	G	IP	H	ER	BB	SO	ERA
Home	20	15.0	14	7	9	14	4.20
Away	13	8.0	8	3	4	9	3.38

Last 10 Games — Pitching

Dae-Sung Koo — Last 10 Games — Pitching
Date	Tm	Opp	Dec	IP	H	R	ER	BB	SO
2005-08-20	NYN	WAS	—	0.1	1	1	1	0	1
2005-08-09	NYN	SDP	—	0.2	0	0	0	0	0
2005-08-06	NYN	CHC	—	0.1	0	0	0	1	0
2005-08-05	NYN	CHC	—	1.0	0	0	0	0	0
2005-08-04	NYN	MIL	—	0.0	1	0	0	0	0
2005-07-21	NYN	SDP	—	1.0	0	0	0	0	0
2005-07-19	NYN	SDP	—	0.2	1	0	0	2	1
2005-07-17	NYN	ATL	—	1.0	1	0	0	0	0
2005-07-09	NYN	PIT	—	1.0	0	0	0	0	3
2005-06-29	NYN	PHI	—	2.0	0	0	0	0	2

Fielding Statistics

Career Fielding Totals by Position

Dae-Sung Koo — Career Fielding Totals by Position
Position	G	GS	PO	A	E	DP
P	33	0	1	6	0	0

Season-by-Season Fielding

Dae-Sung Koo — Season-by-Season Fielding
Year	Team	Pos	G	GS	PO	A	E	DP
2005	NYN	P	33	0	1	6	0	0

Career Games by Position

Position Diamond

Circle size = games played at each position.

Dae-Sung Koo — Career Games by Position
Position	Games
Pitcher	33

Salary History

Dae-Sung Koo's recorded salaries total $450,000 over 1 season, in 2005. Koo's career, 2005 to 2005, falls within 1985 to 2016, the years the salary data covers.

Dae-Sung Koo — Salary History
Year	Team	League	Salary
2005	NYN	NL	$450,000
Total recorded salary			$450,000

Dae-Sung Koo: the record in brief

Between the debut on April 4, 2005 and the final game on August 20, 2005, Dae-Sung Koo built the record summarized on this page. Every season row on the page belongs to the New York Mets, in 2005. Koo played primarily as a pitcher and threw and hit left-handed. The bio adds a birth date on August 2, 1969, in Daejeon, Daejeon, South Korea and a listed size of 6-foot-1 and 185 pounds.

Across 33 games (0 starts), Koo recorded 0 wins against 0 losses with a 3.91 ERA. Koo had 23 strikeouts. Against a 4.29 league ERA for the same years, Koo was 8.8% better. Koo's only pitching season is 2005: 33 games, 23 strikeouts. By Pitcher PIV, Baseball Data Hub's measure of run prevention relative to each season's league, Koo's career adds up to 106.3.

Koo appears at one position only: pitcher, in 33 games. On the mound, the fielding record shows 0 errors alongside 1 putouts and 6 assists.

Frequently Asked Questions about Dae-Sung Koo

Was Dae-Sung Koo a pitcher?: Yes. Dae-Sung Koo pitched in the major leagues, recording 0 wins and 23 strikeouts.
How many home runs did Dae-Sung Koo hit?: Dae-Sung Koo hit 0 career home runs with 1 hit.
What teams did Dae-Sung Koo play for?: Dae-Sung Koo played for one team, the New York Mets (2005).
What were Dae-Sung Koo's career stats?: In 33 games, Dae-Sung Koo went 0-0 with a 3.91 ERA, 23 strikeouts, and 23.0 innings pitched.
How much did Dae-Sung Koo earn in his career?: Dae-Sung Koo's recorded salaries total $450,000 over 1 season, in 2005. Koo's career, 2005 to 2005, falls within 1985 to 2016, the years the salary data covers.
What was Dae-Sung Koo's salary?: Dae-Sung Koo's recorded salary was $450,000 in 2005.
What position did Dae-Sung Koo play?: Dae-Sung Koo played primarily as a pitcher, the position where he appeared in the most games.
How tall was Dae-Sung Koo and how much did he weigh?: Dae-Sung Koo was listed at 6 feet 1 inch and 185 pounds.
What was Dae-Sung Koo's career ERA?: Dae-Sung Koo finished with a 3.91 career ERA, going 0-0 with 23 strikeouts.
How many strikeouts did Dae-Sung Koo have?: Dae-Sung Koo recorded 23 career strikeouts.
Is Dae-Sung Koo in the Hall of Fame?: No. Dae-Sung Koo has not been inducted into the National Baseball Hall of Fame.