William Kempner

Pitcher for Miami

Age: 24, 222 lbs, 6'0"

Born: 6/18/2001, San Jose, CA, USA

Sal: N/A

Currently In the minors

Joins 40-man roster.

The Marlins selected Kempner's contract from Triple-A Jacksonville.

Seasons	City	GP	CG	IP	ERA	W	L	ShO	Sv	H	2B	3B	HR	SO	HB	BB	WP	Bk	R	ER	NH	WHIP	K/9	PPts	PPts/GP

		0	0	0.0	-	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	-	-	0.0	-

Date	Visit.	Home	Time

Player	Pos	City	Injured date	Type	Description	+

Player	Pos	City	Transaction date	Description
W. Kempne	P	MIA	11/18/2025	Joins 40-man roster.

Player	Pos	City	Game Date	Corr. Date	Corr.	Description

Date	Player	City	Pos	Star

Date	Player	City	Pos	Star