Michael Andretti left the team to pursue an opportunity in Formula One for 1993 and was replaced by English driver Nigel Mansell who arrived on the CART circuit with much fanfare. In his rookie season, Mansell, the Formula One World Champion, won five races and had ten top-3 finishes, clinching the 1993 CART title to become the only driver in history to hold both the Formula One and Champ Car titles at the same time. Mario Andretti also returned to victory lane, winning what would be his final Indy car victory at Phoenix. Both Mansell and Andretti were strong contenders at Indy but Andretti slipped to 5th due to a penalty and Mansell, still largely unfamiliar with rolling re-starts after a safety car period (safety cars would not be introduced into F1 until ), was passed for the lead on a restart with only 16 laps to go and would ultimately finish 3rd behind winner Emerson Fittipaldi and second-placed Arie Luyendyk.