Answer
Daniil Kvyat was a reserve driver for Alpine F1 Team in 2021. He did not race in any Formula One events during the year, but he was on standby to replace either Esteban Ocon or Fernando Alonso if either of them was unable to compete. Kvyat had previously raced for Toro Rosso and Red Bull Racing, but he was dropped by the team at the end of the 2018 season.