San Francisco Giants: Who would win in 1-on-1 fights between teammates?

Jul 1, 2015; Miami, FL, USA; San Francisco Giants shortstop Brandon Crawford (35) celebrates with teammates after hitting a solo home run against the Miami Marlins during the sixth inning at Marlins Park. Mandatory Credit: Steve Mitchell-USA TODAY Sports
SFG Middleweight Championship:
Buster Posey vs. Brandon Crawford
Posey weighing in at 215 pounds, standing at 6’1″. Crawford weighing in at 215 pounds, standing at 6’2″.
R1: Posey
R2: Crawford
R3: Posey
R4: Crawford
R5: Crawford
Posey uses his large arms and uppercuts to have a few good KO opportunities, but Crawford is light on his feet. Crawford uses his athleticism to jump off the wall and kick the legs out from under Posey.
Post-Fight Results: Crawford prevails with his height advantage, attacking the weak catcher legs on Posey.
Next: Heavyweight Championship