Who is the tallest relief pitcher for the Diamondbacks? Gavin Hollowell was claimed off waivers from the Rockies and immediately optioned to the AAA Reno Aces. At 6 feet, 7 inches, he is the tallest pitcher with the Aces. When he gets called up to the Diamondbacks, he and Miguel Castro will be tied for the tallest pitcher.
What is his fastball velocity? Assuming his velocity is unchanged from 2023, if he joined the bullpen on 22 June, his 4-seam fastball’s 93.4 MPH velocity would be the fifth highest in the bullpen (behind Martinez, Vieira, Ginkel, and Jarvis).