Once the Major Leaguers took batting practice, Yastrzemski wandered over to the main field, where he stood behind the cage and shared some laughs with former teammates Jim Rice and Luis Tiant.
Yastrzemski also renewed acquaintances with manager John Farrell and second baseman Dustin Pedroia.
Though Yastrzemski has always kept a low profile at Spring Training, he has been coming to Boston's camp virtually every year since he retired in 1983.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.