PHOENIX -- Oakland A's outfield prospect Javier Herrera will miss the season after undergoing Tommy John surgery within the next week. The 20-year-old from Caracas, Venezuela, reported pain in his right arm after a recent game at the A's Minor League complex.
"We took him in, had him examined and we got the diagnosis," A's director of player development Keith Lieppman said Thursday. "It's hard to tell whether it happened in one throw or if it was a combination of other things."
According to A's assistant general manager David Forst, Herrera will visit with specialist Dr. Lewis Yocum this weekend in Los Angeles for an examination.
"It's unfortunate," Forst said of the injury.