With Ryan Vogelsong sidelined for the foreseeable future, the San Francisco Giants are facing more challenges for their struggling rotation...

SAN FRANCISCO — With Ryan Vogelsong sidelined for the foreseeable future, the San Francisco Giants are facing more challenges for their struggling rotation.

The Giants placed Vogelsong on the 15-day disabled list Tuesday, a day after he broke his hand on a swing, and prepared to be without their right-hander for up to two months after he underwent surgery Tuesday.

Athletic trainer Dave Groeschner said the operation went well.

“I’ll be back, no question about that,” said Vogelsong.

Vogelsong had a slow start this year, and he’s not alone. The Giants’ typically steady starters — Madison Bumgarner, Barry Zito, former UW star Tim Lincecum and Tuesday night’s pitcher, Matt Cain — began the day with a combined 4.78 earned-run average.

Around the majors

• The Indians placed first baseman Nick Swisher on the paternity list after he and his wife welcomed their first child.

• The Texas Rangers purchased Neal Cotts‘ contract from Class AAA Round Rock before their game against Oakland, bringing the left-hander back to the majors for the first time since 2009.

Cotts had ligament replacement surgery in 2009.

• The Red Sox held Shane Victorino out of the lineup Tuesday against the Chicago White Sox because of tightness in his left hamstring.

• The Nationals placed reliever Ryan Mattheus on the 15-day disabled list after he broke his right pitching hand punching a locker.

Jose Canseco is back in the independent United League as a player-coach. The 48-year-old Canseco will be with the Fort Worth Cats for their opening four-game homestand, which starts Thursday.