Kontos is best known for his nine goals in 11 playoff games while he was a member of the Los Angeles Kings and his franchise opening night four-goal performance (with the Tampa Bay Lightning) against that season's Vezina Trophy winner Ed Belfour.

He was member of the Tulsa Oilers (CHL) team that suspended operations on February 16, 1984, playing only road games for final six weeks of 1983–84 season.

On January 21, 1987, Kontos was traded to the Pittsburgh Penguins for Ron Duguay, finishing his tenure with the Rangers with 38 points in 78 games.

The following year, after returning from playing in Switzerland he scored three points in seven games, and his 9 playoff goals would help the Kings advance to the second round.

His surprising 4-goal performance led the upstart Tampa Bay Lightning to a 7–3 shocker of the Chicago Blackhawks on October 7, 1992, and remains tied for the team record for goals scored in a single game.