Looking into IMSA’s 2021 crystal ball can’t begin without looking in the rearview mirror, as John Doonan and the IMSA team performed a miracle, COVID-19 notwithstanding. They packed every race on the schedule, save one (Watkins Glen), into a mad rush to the Mobil 1 12 Hours of Sebring, which ended the season in mid-November. The battle for the DPi championship came down to the last lap at Sebring (Fla.) Int’l Raceway with the No. It was Team Penske’s final race, and secured Helio Castroneves, who teamed with Ricky Taylor, his first drivers’ championship. In GTLM, the CORE Autosport Porsche won at Sebring — its last race as a factory team.

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