Former Penske driver Castroneves first joined MSR for a six-race campaign last year, and opened his account with victory in the 105th Running of the Indianapolis 500 to become the fourth four-time Indy 500 winner in history, joining AJ Foyt, Al Unser and Rick Mears in the pantheon of the Speedway greats.
The win was also the first-ever IndyCar win for MSR and the 31st for Castroneves, who was re-signed for 2022 as the team went full-time with two cars for the first time.
