Racing will have to get up to pace fast
Racing 92 will need to scrub up on their away form ahead of the Champions Cup after the French champions crashed to a monstrous 47-10 defeat to Clermont last weekend.
It was a nightmare 80 minutes for Racing, but two yellow cards in the first-half cost the Parisians dearly. After that double blow they trailed Clermont 27-3 at the interval, but there was no let up after parity was restored.
And it doesn't get any easier this weekend, although home advantage should result in a stronger showing against Toulon on Sunday.
Leicester Tigers have also slipped down the table and they trail English Premiership leaders Saracens by five points following their 34-22 defeat to Wasps at the weekend.
Tries from Christian Wade, Guy Thompson and Sam Jones added to Jimmy Gopperth's kicking saw Wasps race into a 27-8 lead only for Leicester to finish strongly.
But after Ellis Genge and Peter Betham were both yellow carded late on, Gopperth condemned Tigers to defeat, and Newcastle away on Sunday is another tough test for them.
And Munster's fellow Pro12 side Glasgow Warriors continue to shine with a second impressive win over an Irish province, this time a 33-25 victory over Leinster at Scotstoun. No doubt Tommy Seymour is the man to watch with his four tries, but they'll be tested against unbeaten Cardiff in Wales tonight.