 Selected in 1973 by the Boston Bruins of the National Hockey League and the Los Angeles Sharks of the World Hockey Association, Gibson spent most of his first two professional seasons in the Bruins' minor-league hockey system.In the 1975–76 season, he played with the Bruins, but he returned to the minors in the following season.After Boston waived Gibson in 1977, he played briefly for the Washington Capitals.