William Kempner

Career Stats, Bio & Records (2026)

Active Player
W–L 1–0
ERA 2.92
WHIP 0.97
SO 14
Bats / Throws
R / R
Height / Weight
6'0" / 222 lb
Born
6/18/2001 in San Jose, USA
MLB Debut
2026-05-05
Jersey
#71
Draft
2022

Full name: William Kempner Kempner

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Career Pitching Statistics

W L G GS CG SHO SV IP H ER HR BB SO ERA Pitcher PIV
1 0 9 0 0 0 0 12.3 8 4 1 4 14 2.92 0

Career ERA 2.92 vs. league average 4.18 across their career seasons — 30.1% better than league average.

Season-by-Season Pitching

Pitching Career Arc

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Year Team Lg W L G GS CG SHO SV IP H ER BB SO ERA Lg ERA Pitcher PIV
2026 MIA NL 1 0 9 0 0 0 0 12.3 8 4 4 14 2.92 4.18 (+30%) -

Frequently Asked Questions about William Kempner

Was William Kempner a pitcher?
Yes. William Kempner pitched in the major leagues, recording 1 wins and 14 strikeouts.