Recalled
May 30, 2026
Miami Marlins recalled RHP William Kempner from Jacksonville Jumbo Shrimp.
From Jacksonville Jumbo ShrimpTo Miami Marlins
William Kempner
PR/R24 yrsUnited StatesActive
Debut: May 5, 2026 · Draft: 2022
Birthplace
San Jose, CA, USA
Season Highlights
ERA 0.00SO 8WHIP 0.75
Profile
2026 Season · —
Bio
Position
P
Bats / Throws
R / R
Birth Date
Jun 18, 2001
Debut
May 5, 2026
Season Splits
Splits are shown as stored by team. Some players may have multiple rows after trades.
Seasons: 1 · Hitting: 0 · Pitching: 1 · Fielding: 1
Trade & Transaction History
4 recorded moves.
Trade
Optioned
May 6, 2026
Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp.
From Miami MarlinsTo Jacksonville Jumbo Shrimp
Recalled
May 5, 2026
Miami Marlins recalled RHP William Kempner from Jacksonville Jumbo Shrimp.
From Jacksonville Jumbo ShrimpTo Miami Marlins
Optioned
Mar 8, 2026
Miami Marlins optioned RHP William Kempner to Jacksonville Jumbo Shrimp.
From Miami MarlinsTo Jacksonville Jumbo Shrimp