F1 2021: Hamilton back into championship lead but Verstappen smiling after Russia

The Russian Grand Prix at Sochi provided one of the most thrilling races of the season, as a late rain shower spiced up the on-track action. With Lewis Hamilton winning, the Mercedes man shoots back into the lead of the Driver's Championship, but Max Verstappen and Red Bull will be thrilled with their recovery to second place following their engine penalty. Are Mercedes hiding reliability issues with their engines? Why did Valtteri Bottas take on another new engine - necessary, or unusual t...