BOSTON — Hall of Famer Carl Yastrzemski, the last player to hit for the Triple Crown, underwent heart bypass surgery today after experiencing chest pains.

The 68-year-old Yastrzemski was in surgery Tuesday evening after being admitted to Massachusetts General Hospital, said his spokesman, Dick Gordon.

The popular Yaz was an 18-time All-Star and spent his entire career with the Boston Red Sox, taking over left field for Ted Williams in 1961 and playing through 1983.