This day in baseball: The Sandman starts

Though he was usually used as a relief pitcher, on August 31, 1990, Mariano Rivera was given the start in a game on the final day of the season for the Gulf Coast Yankees.  The opportunity allowed him to throw enough innings to qualify for GCL’s ERA title, an accomplishment that carries a contractual bonus.  Rivera threw a seven-inning no-hitter against Bradenton to finish the season with a 0.17 ERA, 0.46 WHIP, 58 strikeouts in 52 innings, and $500 dollars richer.

Wikipedia