MLB

Giants first baseman Brandon Belt has knee surgery

SAN FRANCISCO, CA - SEPTEMBER 13: Brandon Belt #9 of the San Francisco Giants stands on the field against the San Diego Padres during the seventh inning at AT&T Park on September 13, 2015 in San Francisco, California. The San Francisco Giants defeated the San Diego Padres 10-3. (Photo by Jason O. Watson/Getty Images)

SAN FRANCISCO, CA - SEPTEMBER 13: Brandon Belt #9 of the San Francisco Giants stands on the field against the San Diego Padres during the seventh inning at AT&T Park on September 13, 2015 in San Francisco, California. The San Francisco Giants defeated the San Diego Padres 10-3. (Photo by Jason O. Watson/Getty Images)

Already deemed out for the season due to concussion symptoms, San Francisco Giants first baseman Brandon Belt has had surgery to repair another ailment.

Manager Bruce Bochy revealed on Wednesday that Belt had arthroscopic surgery to repair a torn meniscus in his right knee.

Belt was shut down by the Giants last week after experiencing lingering symptoms from a concussion he sustained the prior week.

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"The timing is good," Bochy said of Belt's surgery. "After surgery, you just have to be quiet and lay down for two or three days. It was still going to be a little while before he could do some baseball activities."

As the media was informed of Belt's surgery, they were simultaneously informed of the injury that caused it, as no prior word had been given of his knee ailment.

"It was just a gradual thing," Bochy explained. "He had been getting treatment on it. I think you could look at a handful of those guys [in our clubhouse] who probably have a little tear."

Belt, who hit .280/.356/.478 with 18 home runs and 68 RBI in 137 games this season, is expected to recovery from the surgery in approximately four weeks.

"It was one of those nagging deals that he could play with. It was bothering him some," Bochy said. "It's that time of year. You heal up, get cleaned up with some surgery and get ready for spring."