CLEVELAND (Ticker) -- Cleveland Indians catcher Sandy Alomar underwent arthroscopic surgery on his left knee today and no timetable was set for his return. The surgery was performed at Lutheran Medical Center by team orthopaedic surgeon Dr. Louis Keppler, who removed loose bodies from the knee. Alomar had similar surgery on the same knee in the offseason. While orginally claiming the surgery would sideline the six-time All-Star catcher for four to five weeks, the team today would not speculate on when he would be back in the lineup. Alomar made his seventh career trip to the disabled list Monday, retroactive to May 11. He missed six games earlier this year with back spasms. Even with Alomar nursing injuries, Cleveland still owns the best record in baseball at 29-10. Playing on the same team as brother Roberto for the first time in their careers, Alomar was off to a fast start, batting .317 (26-for-82) with three home runs and 16 RBI. The injury leaves rookie Einar Diaz as the primary catcher for the Indians, with recently promoted Chris Turner serving as the backup. Diaz is hitting .257 in 20 games. Alomar, who turns 33 in a month, missed seven games last year due to soreness in the same knee and an additional 20 with an ailing groin, shoulder and hamstring, but never spent time on the disabled list. Alomar has been hampered by injuries throughout his 10-year career. In 1997, he avoided a trip to the DL and had a magical season, being named Most Valuable Player of the All-Star Game at Cleveland's Jacobs Field and leading the Indians to within one win of a World Series title. He batted .324 with 21 homers and 83 RBI that year, putting together a career-high 30-game hitting streak. He had five homers and 19 RBI in the postseason, including 10 in the World Series loss to the Florida Marlins. Alomar has not played more than 127 games in a season since his rookie year of 1990. He is a career .275 hitter with 83 home runs and 408 RBI in 881 games for Cleveland and San Diego. He played eight games for the Padres from 1988-89.  