Pitcher Forrest Whitley, the Houston Astros' top prospect, will have Tommy John surgery, manager Dusty Baker announced Wednesday.
Miami Marlins pitcher Jose Fernandez, a native of Santa Clara, Cuba, has become a U.S. citizen.
The Boston Red Sox announced Wednesday night that Christian Vazquez, who was to have begun the season as the team's No. 1 catcher, will undergo season-ending Tommy John surgery on his right elbow Thursday.
Pitching prospect Brady Aiken, the first overall pick in last year's draft who failed to reach an agreement with the Houston Astros, underwent Tommy John surgery on his left elbow.
Yu Darvish has decided to undergo Tommy John surgery, the Texas Rangers announced Friday.
Yu Darvish and the Texas Rangers will get one more opinion before the ace pitcher likely agrees to season-ending elbow ligament-replacement surgery.
