The three-time series champion stepped away from the DTM after securing the 2020 title in the final Class One season before the championship's switch to GT3 rules for 2021, but returned this year following Audi's withdrawal from Formula E.
After a difficult opening round in Portimao where he scored no points, Rast got back onto the podium last time out at the Lausitzring then converted his first pole of the season in the opening race at Imola on Saturday to a comfortable victory over old rival Nico Muller.
