Pro Day Highlights Day 2 of 3
Here's Kenny Serwa throwing the world's hardest knuckleball: sitting 87+, touching 88.5 mph.
He also has:
-A 2nd knuckleball in the high 70's/low 80's
-A 94+ mph fourseam
-A low 90's sinker
-A low 80's curve
Check it out: