Mitch Keller struggles again in Pirates' blowout loss to Brewers
Kovacevic: Keller applies tourniquet to Pirates' torment ☕ – WPXI
Mitch Keller establishes heater, turns back clock with encouraging
Derek Shelton, Pirates fume, as umpiring takes center stage in
Pirates' Mitch Keller 'making good things happen' with renewed
Mitch Keller cruises Pirates past Brewers 4-2 - Bucs Dugout
Mitch Keller continues strong summer for Pirates
just four teams
Mitch Keller shines but Pirates fall to Marlins in 10 innings
Mitch Keller continues strong summer for Pirates
just four teams
Now that Mitch Keller found his fastball velocity, he wants to
Mitch Keller continues strong summer for Pirates
2021 Preseason Top 100 Prospects List, by Tieran Alexander