Washington Nationals left fielder Bryce Harper will undergo surgery Tuesday to repair a torn ulnar collateral ligament in his left thumb and is expected to be out until at least early July, according to multiple sources.
Harper, 21, injured his hand during a head-first slide into third on a bases-clearing triple in Friday's victory over San Diego. He stayed in the game for an inning before being replaced.
The extended loss of Harper is a significant blow to a Nationals roster already riddled with injuries to key players, among them catcher Wilson Ramos, third baseman Ryan Zimmerman (both with hand injuries) and starting pitcher Doug Fister (back).
Harper missed 44 games last season, his second in the majors, with a left knee injury. He was injured in mid-May when he slammed into the right-field wall at Dodger Stadium.
He is not the first star player to suffer a similar injury recently.
All three players suffered the injury sliding into a base.