Bob Nightengale of USA Today was the first to report the news Sunday.
Known as “Hendu” by family and friends, Henderson played with the Seattle Mariners, Oakland Athletics, Boston Red Sox, San Francisco Giants and Kansas City Royals over his 14-season major league career.
Henderson is likely most famous for his postseason heroics with the Red Sox, hitting a game-tying, ninth-inning home run against the Angels in game 5 the 1986 ALCS that sparked his team’s comeback from 3–1 down in that series. The Red Sox would eventually lose to the New York Mets in the World Series.
He won his only World Series with the A’s in 1989, hitting .308 with two home runs as Oakland swept the Giants.
Henderson posted a career .258 batting average with 197 home runs and 708 RBIs. He hit .298 during the postseason.
Henderson stayed around the game of baseball after his playing career, working as a color commentator for Mariners radio and television broadcasts from 1997-2006.