Warner was the backup quarterback for the St. Louis Rams during the 1998 regular season and the 1999 preseason. When their main quarterback Trent Green was injured in a preseason game, Warner became the starter. He had one of the best seasons by a quarterback in NFL history by throwing for 4,353 yards with 41 touchdown passes and a completion rate of 65.1%. The Rams' very good offense was nicknamed "The Greatest Show on Turf." In the first three games that he was the main quarterback who plays, he threw three touchdown passes in each game. He is the only NFL quarterback in history to do that, and only the second, behind Dan Marino, to do it in his first two NFL starts.