A three-time All-Pacific Conference selection, Foulk ranks third in Cal history with a lifetime 0.90 goals-against average and tied for fourth with 20 career shutouts. He also ranks among the school's all-time best in the season record books with a 0.74 GAA in 1981 (fourth) and eight shutouts in both 1981 and '83 (fourth).
Foulk was a member of the 1980 U.S. Olympic soccer team, which did not compete in Moscow due to the U.S. boycott of the Games.
After graduating from Cal in 1984, Foulk gained many years of professional playing experience, including with the NASL's Los Angeles Aztecs, the ASL's Sacramento Gold and with teams in Switzerland and Germany.
Raised in Europe and now a resident of Walnut Creek, Foulk also has several years of coaching experience in the Bay Area. He spent two years as the head boys' varsity coach at De La Salle High School in Concord and the last five and a half years as coach of the Diablo Futbol Club, formerly the Diablo Valley Soccer Club.