The almost 40 - year - old knows hitters like to face him in BP , and the Minor Leaguers now know why .
Arroyo threw 40 pitches to Brandon Dixon , Aristides Aquino and Gabriel Guerrero .
The almost 40 - year - old knows hitters like to face Arroyo in BP , and the Minor Leaguers now know why .
Arroyo threw 40 pitches to Brandon Dixon , Aristides Aquino and Gabriel Guerrero .