Everybody has won a game in this pool following Cardiff Blues amazing upset of reigning champions Toulon at the Arms Park, and Glasgow Warriors' home triumph over Exeter Chiefs. The Chiefs sit on top of the pool on try count in what is only their second season in the tournament.
The top two teams will now met in the back-to-back matches in December, with Rob Baxter's Chiefs facing arguably the biggest game in their history on Saturday, 7 December at Sandy Park when they host Toulon.
The Chiefs led 9-6 at Glasgow in Round 2, but couldn't hold on and eventually went down 20-16. That earned them a bonus point, though, with Dave Ewers try in the 75th minute proving crucial.
At the Arms Park, the Blues went through 80 minutes against the Heineken Cup champions without conceding a try - some feat when you remember they leaked six against the Chiefs n Round 1. Jonny Wilkinson kicked five penalties to give his side a 15-12 lead going into the final 10 minutes, but a try at the posts from replacement outside half Gareth Davies three minutes from time changed the whole course of events.
Leigh Halfpenny slotted the conversion and the Blues were in dreamland with a 19-15 victory over the side that had done the double over them on their way to the title last season. The Blues now face Glasgow Warriors in December, starting with a vital home game on Friday, 6 December.