College
Johns Hopkins UniversityO'Neill was inducted as a truly great player. One of the most decorated players in school history, he was a three-time first team All-American at Johns Hopkins in 1976, 1977 and 1978, and received second team All-America honors in 1975. He was team captain of the Johns Hopkins national championship team of 1978. He received the Turnbull Award as the nation's outstanding Division I attackman in 1977 and 1978. In 1978, he also received the Lt. Ray Enners Award as the nation's most outstanding Division I player. He finished at Johns Hopkins as its all-time scoring leader with 237 points (138 goals, 99 assists), and at the time, was the only player in school history with more than 125 goals and 95 assists.
O'Neill played for the gold medal winning U.S. Team in the 1982 World Championship. He played for the Chesapeake Lacrosse Club for three years and the Brine Lacrosse Club for four years. He was an assistant coach at the University of Delaware in 1979, the University of North Carolina in 1980 and Brown University from 1981-84.
O'Neill was inducted into the Johns Hopkins Athletic Hall of Fame in 1978 and the US Lacrosse Long Island Metro Chapter Hall of Fame in 1993.