Sharp work from Ali Price gave Warriors the perfect start to the second half

Tries from Alex Dunbar and Ali Price, both converted by Finn Russell with the stand-off adding three penalties gave the Warriors one of their best results in Europe and a vital away win in what looks like being a tight group.

Glasgow don't have long to wait for a chance to back up today's win with Scotstoun hosting next Friday's return match with Racing.

It took last season's Champions Cup runners-up seven minutes to hit the front after a frantic start.

Dan Carter sent a long pass to Casey Laulala, who sent Brice Dulin racing away from his own half.

The full-back combined with Joe Rokocoko, who powered towards the try line but he was brought down, and the ball was worked back to the blindside, where Imhoff dotted down at the corner for the second try.

But Glasgow earned a penalty just inside the Racing 22 metre line moments after the restart, and Finn Russell got his side on the scoreboard.

He added another penalty to cut the gap to a single-point, and it was to get even better when Alex Dunbar raced in for a try after half-an-hour.

Russell sent his centre crashing through a gap in the Racng defence to score, with the in-form fly-half adding the conversion for a 13-7 lead.

Jonny Gray then secured a vital turnover to help his side secure their advantage at the break.

Gregor Townsend's team-talk clearly had a positive effect on his players as they raced out of the blocks to take control in Paris. Russell was at the heart of things again as he was brought down just short of the Racing line, but his half-back partner Ali Price spotted a gap and sniped in to score at the base of the posts after 42 minutes.

The conversion was duly added by Russell to give Glasgow a 20-7 lead. Ryan Wilson then got his hands on the ball at a ruck to earn Townsend's men a crucial penalty deep in Racing territory. Russell made no mistake to put his side 16 points ahead with just 15 minutes remaining.

Carter then danced through the Warriors defence to score, before converting to bring his side back to within nine points, but it was too little, too late and Glasgow look set to fight-it-out with Munster for top spot.