Sebastian Vettel says Mercedes' decision to swap Valtteri Bottas and Lewis Hamilton for the lead of the Russian Grand Prix was a "no brainer".
After starting from pole position, Bottas was on target to win the race when Mercedes told him to let his teammate past on lap 25. The swap happened just as Vettel was starting to put pressure on Hamilton and ensured the Mercedes driver extended his championship lead over Vettel by another 10 points to 50 with five races remaining.