Dublin became the final team to pick up points in this year's National Football League with Sunday's victory over Tyrone in Omagh.
Their task was made easier when Tyrone captain Pádraig Hampsey was shown a red card just three minutes into the second off for shouldering Cormac Costello as he stood on concrete off the Healy Park pitch.
Hampsey, who was making his way to retrieve the ball, was shown a yellow card by referee Barry Cassidy, followed by a red. Hamspey had already been shown a black card in the first half by the Derry official for a late hit on Dublin midfielder Tom Lahiff. The two cards added up to a sending off.
"It's on concrete. He doesn't need to do that," Kerry legend Colm Cooper said on RTÉ's League Sunday.
"There's nothing too serious in it but it can be dangerous hitting a player when he's on concrete like that.
"The question I'm asking myself is why bother? Just get the ball back in play, you're chasing the game. When you've received the black card, why would you be thinking about hitting somebody off the side of the pitch?"
Cooper added: "Maybe a couple of times, their discipline has let them down this year."
Pádraig Hampsey red card Tyrone vs Dublin
— RTÉ GAA (@RTEgaa) March 13, 2022
With two rounds remaining in the National League, Tyrone and Dublin are both in danger of being relegated from the top tier. Tyrone sit sixth on three points, level with Kildare in seventh, while Dublin are bottom with two points.
"I gave them a pass earlier in the league because they were back late, they were on a team holiday after winning an All-Ireland, well-deserved," Cooper about Tyrone.
"But, I'd be getting a small bit worried if I was Tyrone. They look a bit leggy, they're behind other teams fitness-wise - they have a bit of work to do. Unfortunately for them, the next two fixtures for them are difficult: It's Mayo next weekend, and then they're heading to Killarney to play Kerry. It's not going to get any easier for them."