Moneyball Labs
Kim Jae-yoon
Samsung LionsRelief pitcherNo. 62Below qualificationThe converted closer

Kim Jae-yoon

김재윤

Drafted as a catcher, moved to the mound, and closed for KT's 2021 champions before signing with Samsung. The saves column measures the role; the FIP column measures the pitcher.

Born
1990-09-16· 35
Bats / throws
bats right, throws right
Height · Weight
185 cm · 91 kg
Draft
15 KT 2차 특별 13순위
Debut
2009

Path서울도곡초휘문중휘문고KT

Percentile

Against the league

Percentile against every qualified pitcher in the league this season.

ERA3.32
FIP3.45
K%26.3%
BB%10.5%
HR/90.5
WHIP1.04
WAR1.49

Workload

Pitches / inning

16.6

Pitches / batter

4.15

Fatigue index

91

100 is a league-typical workload. Above it, the arm is doing more work per out than the innings column suggests.

58 G

Pitching line

IP57TBF228
W7L5
SV31HLD0
H35HR3
BB24HBP1
SO60NP946
R21ER21
QS0BSV5
CG0SHO0

Advanced

ERA3.32FIP3.45
E−F−0.13WHIP1.04
ERA+141FIP+135
K/99.5BB/93.8
HR/90.5K/BB2.50
BABIP.229LOB%70%
Opp AVG.174WAR1.49

Nearest neighbours

Closest comparables

Nearest neighbours by standardised rate profile, not by reputation.

PlayerTeamIPERAFIPK%BB%HR/9WAR
Adam OllerKIA141 1/32.993.5127.0%8.2%0.73.60
Choi Min-seokDoosan133 2/32.693.8320.6%9.3%0.52.96
Kwak BinDoosan1552.262.8429.8%6.2%0.65.03
TolhurstLG134 1/34.224.0119.0%5.6%0.82.72
James NaileKIA152 2/33.663.8119.7%4.7%0.73.41

Pitcher WAR is built from FIP, so it credits strikeouts, walks and home runs and stays neutral on everything the defence touched. Relief innings are not leverage-weighted, which understates a closer.