Despite her small stature, Green-Vargas was a two-time All-American setter at
USC. She perfected the jump set, allowing her to meet the ball higher in the vertical plane and create a higher tempo in the offense. In doing so she was able to consistently create opportunities advantageous for her hitters. In 1977, Green-Vargas led the Trojans to a 38–0 record and an
AIAW National Championships. Hers was the first college volleyball team to ever register a perfect season. Green-Vargas led the Trojans to their second national championship the following year in 1978. She won the Broderick Award, (now the
Honda Sports Award) as the nation's best female collegiate volleyball player in 1978. ==Olympic career==