Catherine Leigh "Cat" Osterman (born April 16, 1983) is an American, former collegiate four-time All-American, left-handed softball pitcher originally from Houston, Texas. She completed her college eligibility in 2006 at the University of Texas at Austin, where she was a starting pitcher for the Longhorns since 2002. Osterman pitched on the USA Women's Softball Team which won the gold medal at the 2004 Summer Olympics and the silver medal in the 2008 Summer Olympics. Osterman is the Big 12 wins, ERA, strikeouts, shutouts and no-hitters leader, additionally claiming the NCAA Division I records for strikeout ratio (14.34), WHIP and perfect games (7). She owns numerous records for the Longhorns and within the NCAA, where she is also one of five pitchers to strikeout 1,000 batters with 100 wins, an ERA of under 1.00, and averaging double digit strikeouts.