In 1968, Robert led Ridley High's soccer team to the League and District championships. At East Stroudsburg State College, he was selected the first team All-America Goalie in 1972. He was later drafted in the first round by the Philadelphia Atoms and helped them win the North American Soccer League Title during his rookie season. He was named the league's Goalie Of The Year after giving up just .62 goals per game. That year, Robert became the first soccer player to appear on the front cover of Sports Illustrated". He also established many records as a goalie, some of which still stand today. For 13 years (1973 -1986), Robert played Professional Soccer for the Atoms, New York Cosmos, Los Angeles Aztecs, and Philadelphia Fury. He would become one of the greatest goalies in American soccer history.