All week, Munster's players have been repeating the fact that Leicester Tigers have never lost both games in a European back-to-back encounter.
Given the two-time champions were the ones who ended the Irish province's long unbeaten spell at Thomond Park, Munster would take great pleasure in breaking their Tigers' streak at Welford Road tomorrow. If they do, the quarter-finals are within reach.
Lose and Pool 4 will be wide open. Indeed, if Racing turn the tables on Castres in Paris and Leicester win this one, then there will be very little between the teams. with two games remaining.
You sense that Munster will need to win one of their upcoming two away games and this would appear as good a shot as any.
As soon as Mathieu Raynal blows the starting whistle, all eyes will be on the first ruck.
The French official will be fully aware of how Tigers coach O'Connor has been castigating his compatriot Jerome Garces's officiating at the breakdown at Thomond Park during last week's 33-10 loss.
However, Munster are not intending to change much tomorrow evening.
"I thought our breakdown work was good, to be honest," Conor Murray said yesterday.
"It was a joy to play on the front foot like that.
I think when you go away, in Europe, your discipline is top of the list of things to get right.
"They were good, but we were clinical there. Chris Cloete was great for us, Peter O'Mahony, Jean Kleyn, these massive lads did damage, it's great to see."