I've always contended that Cuban-American acting great Andy Garcia moonlighted as a football player. Garcia's alter-ego for 16 years was former NFL placekicker & current Birmingham radio personality Al Del Greco. Upon seeing Del Greco's career winding up, the great thespian undertook the creation of a new identity, and in 1999, he created Martin Gramatica.
(Espn.com's "Page 2" contends that Gramatica is actually "The Great Gazoo" from The Flintstones.)