 Although used primarily as a backup and special teams player during his first three seasons, Slater became the starting right tackle in 1979. That year the Rams went to Super Bowl XIV, where he successfully defended L.C. Greenwood from getting a quarterback sack. In 1980, he was a part of an offensive line that surrendered just 29 sacks and helped the Rams ’ offense finish second in the NFL in total yards gained with 6,006. In 1983, he and the Rams offensive line demonstrated their versatility when they allowed a league-low 23 sacks while also paving the way for Eric Dickerson ’ s rookie rushing record of 1,808 yards. In 1985, he was the key blocker for Dickerson as he ran for a playoff record 248 yards and two touchdowns against the Dallas Cowboys in a NFL divisional game. During a 1989 playoff game, Slater prevented Reggie White, who was considered the premium pass rusher in the NFL, from sacking the quarterback, a game that Slater later became best known for. Slater was considered by critics the most consistent lineman on one of the best offensive lines in the NFL, which also included Pro Bowlers Kent Hill and Dennis Harrah and was regonized for his "work ethic and leadership skills" when he was inducted to the Hall of Fame. He retired after the 1995 season when injuries reduced him to playing one game the entire year. He is the only player in league history to play for one single team / franchise in three different cities (Los Angeles 1976-1979, Anaheim 1980-1994, and St. Louis 1995)
