Lewis A. Yocum, the team doctor for the Los Angeles Angels and an orthopedic surgeon who helped extend the careers of players such as Stephen Strasburg and Dustin Pedroia, has died. He was 66.

Yocum was a fellow at the Kerlan-Jobe Clinic in Los Angeles and specialized in shoulder, elbow and knee surgery. USA Today reported that Yocum had liver cancer, without saying where it got the information.

“Dr. Yocum’s impact in the medical field will long be remembered across the country,” the Angels said on their Twitter account. “The list of careers he extended is endless.”

Yocum was a consulting surgeon for hundreds of major-league players and recently met with Philadelphia Phillies pitcher Roy Halladay, a two-time Cy Young Award winner, about Halladay’s shoulder injury.

Yocum performed Tommy John elbow ligament-transplant surgery in 2010 on Strasburg, drafted No. 1 by the Washington Nationals the previous year. Strasburg returned to go 15-6 with a 3.16 ERA last season.

Yankees stars preparing to play

Joba Chamberlain was activated from the disabled list by the New York Yankees, and injured infielders Mark Teixeira and Kevin Youkilis might not be far behind.

Chamberlain was back in the bullpen for the second Subway Series game against the New York Mets after missing a month with a strained muscle on his right side. To make room on the roster, left-hander David Huff was designated for assignment.

Teixeira and Youkilis both got five at-bats Tuesday during an extended spring training game in Florida, then headed out to begin their rehab assignments Wednesday with Double-A Trenton. Yankees manager Joe Girardi said it’s possible both could be ready to rejoin the team after two games in Trenton.

San Diego reinstates catcher

The San Diego Padres reinstated catcher Yasmani Grandal from the restricted list after he missed the first 50 games of the season while serving a suspension for a positive testosterone test.

The Padres optioned catcher John Baker to Triple-A Tucson and designated for assignment infielder Edinson Rincon.

Cardinals call up top prospect

The St. Louis Cardinals ran out of arms and reasons not to promote their top pitching prospect. Michael Wacha, the popular choice to fill rotation holes all along, will start in his major-league debut Thursday against the Kansas City Royals.

The Cardinals lead the majors with a 33-17 record, overcoming numerous injuries with minor-league call-ups. They filled rotation spots with less celebrated rookies John Gast and Tyler Lyons earlier in the season.

The 6-foot-6, 210-pound Wacha, 21, was the team’s first-round draft pick last year out of Texas A&M. He’s 4-0 with a 2.05 ERA that leads the Pacific Coast League.

Red Sox activate Morales

The Boston Red Sox activated left-hander Franklin Morales from the disabled list. Righty Alfredo Aceves was optioned to Triple-A Pawtucket. Morales made five rehab starts in the minors and was 1-1.