George Russell believes Mercedes’ Spanish Grand Prix qualifying performance has put them back in the hunt to battle rivals Ferrari, McLaren and Red Bull. Mercedes have brought a small update to their floor at the Circuit de Barcelona Catalunya, following their significant front wing update on both cars at the previous round in Canada. Since introducing it, the team have threatened regular front-runner Ferrari and got close to both Red Bull and McLaren. It has reignited talk that the Silver Arrows could be in a title hunt, with Russell believing their performance in qualifying is proof they are…