Over a four-season span from 1967-70, Jarvis was one of the National League's top starting pitchers, winning 60 games. He was Atlanta's starting pitcher in Game 3 of the 1969 National League Championship Series, played at Shea Stadium in New York City. A first-inning Hank Aaron home run staked Jarvis to a 2-0 lead, but he ended up the losing pitcher in a 7-4 defeat to the New York Mets.