Brendan Cummins believes that whichever side keeps their discipline will advance from Saturday's standout hurling qualifier clash between Clare and Wexford at Semple Stadium.
Former Banner team-mates Brian Lohan and Davy Fitzgerald will renew hostilities on the sideline in what will be the third championship meeting of the counties since the ex-Clare goalkeeper took over Wexford. Clare were comfortable winners in 2018 and 2020.
"We know there's no love lost. There will be a real edge to this one," five-time All-Star Cummins told the RTÉ GAA podcast.
"But who keeps their emotions in check the best, for me, will be the ones that will win.
"Both managers will take the paint off the walls but when you go out you don't want to give a rash slap anywhere along the line or hit a ball too high because you have too much adrenaline.
"The two of of them have had massive performances in the championship so far even though they didn't get across the line.
"Whoever keeps the head on this one jumps the fence."
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Tactically, Cummins expects both managers to have a plan for opposing danger men Tony Kelly and Lee Chin.
"Wexford will play with a sweeper which will allow everyone to mark their man. I think you’ll find Tony Kelly being pushed out to the wings a lot to get possession – that’s what Davy will try to do. Make him try to do a worldie every time if he does get it.
"At the other end, Clare will probably stand John Conlan 20 yards up the pitch from Lee Chin and they’ll try to play through him.
Cummins expects Waterford to have too much for Laois in the other round one qualifier, and that they might give some of their recently injured players like Conor Prunty and Jamie Barron more time to recover rather than risking them.
"The draw has been quite good to Waterford, they get to get their mojo back and they had an extra week’s rest".
Follow all the championship matches this weekend with our live blogs on RTÉ.ie/sport and the RTÉ News app.
Watch Kerry v Westmeath and Dublin v Kilkenny live on RTÉ2 or RTÉ Player from 4.45pm Saturday, and Donegal v Tyrone followed by Tipperary v Limerick, live on RTÉ2 or RTÉ Player from 1.15pm Sunday.
Watch highlights of all the weekend's action on The Sunday Game at 9.30pm on RTÉ One.
Listen to live and exclusive national radio commentaries on RTÉ Radio 1's Saturday and Sunday Sport