SAN FRANCISCO -- Giants second baseman Joe Panik will be sidelined for an estimated six weeks following surgery Monday to repair the ulnar collateral ligament in his left thumb, manager Bruce Bochy said.
Panik sustained his injury last Friday during an attempted pickoff of Los Angeles' Yasiel Puig at second base. This is Panik's fifth career stint on the disabled list. He was sidelined twice by lower back inflammation in 2015 and by concussions in each of the previous two seasons.
Panik's batting .267 in 23 games. At the time of his injury, he led San Francisco with 24 hits and had scored 11 runs, sharing second place with Brandon Belt in that category among the Giants.
Kelby Tomlinson and Alen Hanson are expected to divide the second-base activity in Panik's absence.
• Left-hander Madison Bumgarner could begin throwing off a bullpen mound in about two weeks, Bochy said.
Bumgarner was expected to fly to the Giants' Arizona training complex later Monday and, Bochy said, likely would undergo an examination of his fractured pitching hand, which has sidelined him all season. Bochy said Bumgarner would immediately begin throwing on flat ground "if all goes well," then progress to the mound.
• Recovered from Tommy John elbow surgery, left-hander Will Smith is scheduled to rejoin the Giants on Wednesday -- not Tuesday as originally anticipated.
"I've waited long enough," said Smith, who missed the entire 2017 season. "I guess I can wait one more day."
Bochy said he wouldn't hesitate to use the versatile reliever in a high-leverage situation immediately.