Managers Mickey Harte and Kieran McGeeney have selected their teams for Saturday's crunch Allianz League Division 1 semi-final between Tyrone and Kildare at Croke Park (throw-in 2pm).
Harte has unsurprisingly made six changes to the Tyrone team that started sluggishly in last weekend's one-point defeat to Kerry in Omagh.
There are five new inclusions in defence, including Conor Clarke and Conor Gormley who were influential substitutes in the Red Hands' second half revival against Kerry.
Clarke resumes at full-back in place of Justin McMahon with Ronan McNamee making way for Gormley at left half-back.
Corner back Cathal McCarron is the only defender to remain in place, with Pj Quinn, Dermot Carlin and Matthew Donnelly also earning call-ups.
Martin Penrose, who struck the woodwork late on against Kerry, will start at top of the right in place of the injured Ronan O'Neill (hamstring).
Joe McMahon switches to the half-forwards as Trillick clubman Matthew Donnelly, more noted as a forward, is listed at centre back.
Meanwhile, Kildare boss McGeeney has made three changes in personnel to the side that lost 3-13 to 1-12 to Down in the final round of the league phase.
Under-21 players Mark Donnellan, Daniel Flynn and Niall Kelly are back in the starting line-up, with Donnellan replacing Shane Connolly in goal.
Willie Groome and Eamonn Callaghan make way in the half-forward line for Flynn and Kelly, who helped the Lilywhites win the Leinster Under-21 title last week.
Although the Kildare U-21s are facing an All-Ireland semi-final on Saturday week, McGeeney is in no mood to rest his young senior panellists.
He told the Kildare Nationalist: "It's not an All-Ireland semi-final, senior level. In terms of importance (the league) is the second biggest competition that you can win in the GAA, so they will all be available for selection.
"There is as much chance of getting hurt in that as there is in training, especially the way these boys train."
Johnny Doyle, who will start in the left corner against Tyrone, remains a hugely important for Kildare up front. He was their top scorer during the league phase with 2-15.
Speaking to the Irish Sun ahead of Sunday's semi-final, he said: "We want to win, we will be putting everything we have into trying to beat Tyrone, and hopefully that gets us the result.
"You don't get that many chances to win things. It's only my second time to play in a National League semi-final.
"The window of opportunity for me is getting smaller and smaller, and you want to be as successful as you can.
"This league is the second most important competition - and last year's Division 2 medal means a lot to me as well.
"There have been a lot of fantastic players for Kildare who have not had a league medal or a Leinster medal to show for their time."
TYRONE (NFL v Kildare): Niall Morgan; PJ Quinn, Conor Clarke, Cathal McCarron; Dermot Carlin, Matthew Donnelly, Conor Gormley; Colm Cavanagh, Sean Cavanagh; Joe McMahon, Peter Harte, Mark Donnelly; Martin Penrose, Stephen O'Neill, Darren McCurry.
Subs: Pascal McConnell, Aidan Cassidy, Conan Grugan, Plunkett Kane, Connor McAliskey, Aidan McCrory, Ciaran McGinley, Ryan McKenna, Ronan McNamee, Patrick McNiece, Sean Warnock.
KILDARE: Mark Donnellan; Ollie Lyons, Michael Foley, Hugh McGrillen; Peter Kelly, Eoin Doyle, Paul Cribbin; Daryl Flynn, Padraig O'Neill; Daniel Flynn, Niall Kelly, Eoghan O'Flaherty; Seán Johnston, Alan Smith, John Doyle.