Kildare's crucial All Ireland qualifier decider with Tyrone in Newbridge is to clash with the Dubai Duty Free Irish Derby at Curragh.
The GAA confirmed that the Round 3 fixture in St Conleth's Park will have a throw-in of 5pm, just 20 minutes before the Derby goes to post at 5.20pm up the road.
Sports fans will have to choose between Kildare's biggest game in 2019 - or celebrating the quintessential Kildare sporting occasion: Derby Day.
Croke Park bosses had the option to fix the crucial meeting for 7pm but decided with the earlier alternative of 5pm.
7pm was chosen as the throw-in time for Laois v Offaly in O'Moore Park in Portlaoise and for Mayo v Armagh in Castlebar
Sky Sports will be showing the game in St Conleth's Park live and there will be Extra Time if necessary.
In 2012, the Derby was switched from Sunday to Saturday because it was clashing with big GAA matches, notably the Leinster Final.
The "Battle of Newbridge" could affect attendance at the redeveloped Curragh Racecourse as GAA fans will either want to attend St Conleth's Park or watch the game in pubs.
The TV audience for the Derby could also be affected as viewers will have to choose between racing coverage on RTE and the GAA on Sky Sports.
Tyrone won't be too happy coming to the Newbridge GAA fortress on Derby weekend where a large home crowd are expected.
Tyrone are managed by Mickey Harte - currently the longest serving inter county manager who has steered his team to three All Irelands and five Ulster titles since he took charge in 2003.
The draw for the qualifiers took place this morning on RTÉ Radio 1’s Morning Ireland.
Following their Leinster semi-final loss to Dublin, Cian O’Neill’s side enjoyed a comprehensive away win over Antrim on Saturday, but will face much stiffer Ulster opposition on this Saturday or Sunday (day and time to be decided today).
Mickey Harte’s side game against the Lilywhites will be their fifth of the championship.
After seeing off Derry and Antrim in Ulster, they came a cropper against eventual provincial champions Donegal at the penultimate stage before emerging victorious away to Longford at the weekend.
Former Tyrone footballer and RTÉ GAA analyst Sean Cavanagh said: "Kildare are capable of putting up a big performance on any given day.
"This is probably what they need to ignite their season,"
ROUND 3 QUALIFIER DRAW
Mayo v Armagh, Castlebar
Kildare v Tyrone, Newbridge
Westmeath v Clare, Mullingar
Laois v Offaly, Portlaoise