Houston Astros prospect Forrest Whitley will undergo Tommy John surgery and miss the 2021 season.

"He's a talent that's been on and off the injured list," Dusty Baker said. "And so hopefully we can go do the operation and then his career can skyrocket from there once he's ready."

Whitley was diagnosed with a sprained ulnar collateral ligament in his right elbow after he experienced discomfort during a live batting practice session earlier in spring training.