No sooner had Harps got on the journey home from Cork on Friday night than the attentions of the manager turned to next Friday night's game against Wexford Youths.
The match at Ferrycarrig Park was always going to be a big game. But following Wexford's win over Galway and Harps' defeat in Cork, it has taken on even added significance.
Harps lead Wexford by six points, having played one game more.
A win for the Donegal club on Friday night will guarantee safety in the Premier Division for another season. A draw would also be a welcome result. But a win for Wexford and suddenly, the battle to avoid the drop goes down to the wire.
Speaking at the weekend, Horgan stressed that Wexford had never gone away in the struggle to avoid finishing in the bottom two.
“Now it's down to six points, and if they beat us, it's three,” he said.
“So it's a huge game on Friday night. We haven't a great record down there. We knew this was always going to be an important game for both teams, and that's the way it has turned out.”
The Harps manager is confident that Michael Funston will be available for selection on Friday, despite needing four stitches in the head wound that forced him out of the game in Cork after only two minutes.
But Damian McNulty will miss the game in Wexford and the match at home to Bohemians through suspension.
There are also injury concerns surrounding Barry Molloy and Sean Houston while Keith Cowan is out for the rest of the season.