The race for quarter-final places in this season's European Champions Cup reaches its conclusion this weekend with the final round of pool games across five groups.
Here, Press Association Sport looks at the permutations, with five pool winners and three best runners-up marching on to the knockout phase in April.
Unbeaten Saracens have already won the group and secured a home quarter-final. Second-placed Ulster realistically need a bonus point victory against Oyonnax in Belfast on Saturday in their quest for one of the best runners-up spots.
Welsh challengers the Ospreys will win the group if they defeat Exeter at Sandy Park on Sunday. Any slip-up, though, and French heavyweights Clermont Auvergne can finish top by beating Stade Marcel-Michelin visitors Bordeaux-Begles, but if Clermont lose and Exeter claim a maximum five points in seeing off the Ospreys, then the Chiefs could progress. There is also a long-odds chance that all four teams could finish level on 16 points!
Powerful French side Racing 92 are group winners and home quarter-finalists, but Northampton could also join them in the last-eight. Realistically, Saints need a bonus point win against the Scarlets in Llanelli on Saturday to keep them among those clubs chasing quarter-final places.
Leicester are home and dry as pool winners, with a home quarter-final also guaranteed. Tigers head to Paris on Sunday, where their hosts Stade Francais know a bonus point win should be enough to progress as a runner-up.
Champions Cup holders Toulon will progress as pool winners if they beat already-eliminated Bath at the Recreation Ground on Saturday with a five-point maximum. If they do not claim a bonus point, though, and Wasps claim five against Leinster in Coventry, then the English club will prevail. The smart money is on Toulon and Wasps progressing.
Possible last eight: Saracens, Racing 92, Leicester, Toulon, Clermont Auvergne, Wasps, Northampton, Stade Francais.