DETROIT -- Tigers right-hander Jordan Zimmermann and outfielder Christin Stewart had core muscle repair surgery Thursday but are expected to be ready for spring training.
The Tigers said the operations took place in Philadelphia and were performed by Dr. William Meyers.
Zimmermann went 7-8 with a 4.52 ERA in 25 starts this season.
Stewart, one of Detroit's top prospects, made his major league debut this year. He played 17 games for the Tigers, hitting .267 with two home runs.
