Published: Aug 17, 2010 2:39 AM EDT
Updated: Aug 17, 2010 4:30 AM EDT

HOUSTON, Texas (AP) — New York Mets relief pitcher Francisco Rodriguez has a torn thumb ligament in his pitching hand sustained during a fight with his girlfriend's father at New York's Citi Field and will need surgery that will sideline him for the rest of the baseball season.

The Mets announced the injury before Monday's game against the Houston Astros.

Mets manager Jerry Manuel said he was "disappointed, discouraged, frustrated ... " by the news.

Rodriguez was suspended for two days following the fight outside a family room at the stadium last week.

The 28-year-old closing pitcher was charged with third-degree assault and second-degree harassment. He was released on his own recognizance and is due back in court Sept. 14.