Dvorak helped the United States national team win the gold medal at the 1985 FIVB World Cup in Japan, where he was selected as the best setter.[3] He also helped the United States to the gold medal at the 1986 FIVB World Championship in France.[2] Along with the 1984 Olympic gold, this set of victories earned his team the "triple crown".[2]
Dvorak played volleyball at the University of Southern California (USC), helping the Trojans win NCAA Championships in 1977 and 1980.[1] In 1980, he was selected as the Most Outstanding Player of the NCAA Championship tournament.[4] He was an All-American all four years at USC.[1]
Beach volleyball
Between 1978 and 1988, Dvorak would occasionally play professional beach volleyball, and once partnered with legendary beach volleyball player Sinjin Smith.[5]