Colorado Rockies outfielder Carlos Gonzalez is scheduled for knee surgery on Monday that likely will end his season.

The Rockies announced Thursday night that Gonzalez will undergo a procedure on the left patellar tendon but did not specify the length of the recovery or when he might return to baseball activities.

A day earlier, the Rockies learned that shortstop Troy Tulowitzki would have season-ending hip surgery on Friday in Vail, Colo.

The 28-year-old Gonzalez was put on the disabled list several days ago with left knee tendinitis. He also has a sprained right ankle and, earlier this year, he had a small tumor removed from his left index figure.

In 70 games this season, Gonzalez batted .238 with 11 home runs and 38 RBIs.

Gonzalez, a two-time All-Star, has a seven-year, $80 million contract that runs through 2017.