Rollie Fingers refused to shave his mustache and turned down the Reds
On This Day In Sports: February 21, 1986: Rollie Fingers announces he is retiring
Rollie Fingers explains the story behind the mustache - Sports Collectors Digest
The 10 Best Mustache Styles to Try This Year – The Bearded Chap
Rollie Fingers chose to retire from baseball rather than shave off that iconic mustache
Happy birthday to Rollie Fingers, who chose retirement over shaving his mustache
Pioneering relief pitcher Rollie Fingers made his case for greatness 35 years ago
Who Has the Best Facial Hair in Baseball History?, History
Today in Baseball History: Oakland's Mustache Gang is born - NBC Sports