Moneyball Labs
Lee Young-jae
Lotte GiantsRelief pitcherNo. 40Below qualification

Lee Young-jae

이영재

A 19-year-old left-handed pitcher for the Lotte Giants, drafted by Lotte in 2025, seventh round, 64th overall. This is his 2nd season since a 2025 debut. This season, working mostly in relief: 1–0, 0 saves and 1 holds, a 4.85 ERA over 13.0 innings, 2.78 FIP and 0.43 WAR.

Born
2006-10-20· 19
Position
Pitcher
Bats / throws
bats left, throws left
Height · Weight
180 cm · 71 kg
Draft
Drafted by Lotte in 2025, seventh round, 64th overall
Debut
2025

Path태봉초(의정부시유소년야구단)신흥중신흥고

Percentile

Against the league

Percentile against every qualified pitcher in the league this season.

ERA4.85
FIP2.78
K%28.3%
BB%11.7%
HR/90.0
WHIP1.54
WAR0.43

Workload

Pitches / inning

19.6

Pitches / batter

4.25

Fatigue index

95

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

21 G

Pitching line

IP13TBF60
W1L0
SV0HLD1
H13HR0
BB7HBP1
SO17NP255
R7ER7
QS0BSV0
CG0SHO0

Advanced

ERA4.85FIP2.78
E−F+2.06WHIP1.54
ERA+96FIP+167
K/911.8BB/94.8
HR/90.0K/BB2.43
BABIP.371LOB%67%
Opp AVG.255WAR0.43

Nearest neighbours

Closest comparables

Nearest neighbours by standardised rate profile, not by reputation.

PlayerTeamIPERAFIPK%BB%HR/9WAR
Kwak BinDoosan1612.242.8130.4%6.0%0.65.27
Choi Min-seokDoosan146 1/33.203.7520.4%8.5%0.53.36
Won Tae-inSamsung145 1/34.523.3518.5%5.4%0.43.95
Jeremy BeasleyLotte1474.963.7224.1%6.7%0.83.41
Adam OllerKIA1783.133.7325.1%8.6%0.74.12

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.