This weekend, the Oakland Athletics will celebrate the 40th anniversary of the organization’s 1972 World Series championship, as part of their three-game series hosting the Cleveland Indians. The highlight of the weekend will be the fan giveaway for Saturday’s matinee—a Rollie Fingers bobblehead doll, featuring his awesome signature handlebar moustache.

Renowned for his famous facial hair, Fingers also happened to have a Hall-of-Fame career as one of the first premier relievers in baseball history and clearly the most successful in the redefined role of the modern closer. His excellence on the field not only revolutionized the role of the closer in modern baseball, but it also paved the way for a long line of great closers in Oakland Athletics team history.

In honor of Fingers’ illustrious career and all the wonderful closers over the past 40 years of A’s baseball, let’s take a look at eight of the greatest closers in Oakland team history.

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