Keller’s fastball is considered his best pitch (60/60 on the 20-80 scouting scale) which is why he used it 60% of the time this season. However, he struggled with it, allowing 41 hits in 89 at-bats with 16 of those going for extra bases. He did throw it 70% of the time for a strike and had very good velocity (95 mph average), so there is definitely some upside despite the bad results he got.
GIF made by Andy Patton.
Blurb written by Justin Filteau