ULSTER v Northampton Saints, Ravenhill, Tomorrow 6.0 (Sky Sports 1)
This is the danger time; just when you think, or everyone else thinks, you have made it and arrived as a European heavyweight.
Sure, Ulster contained and conquered Northampton with the authority of potential champions, and they have the players.
But the removal of their captain Johann Muller poses a question about the structure and soundness of their lineout.
Ireland's Rory Best demonstrated why he is the number one hooker in Europe by blowing away Dylan Hartley.
The old faithful will stroll to Ravenhill tomorrow with confidence in a squad deep enough to deal with the loss of Muller, and good enough to put the Saints out of the competition.