Fermanagh manager admitted it was a case of the good, the bad and the ugly in Fermanagh's Ulster SFC defeat of Antrim on Sunday, and warned his side Donegal will send them running for the hills if they don't improve.
The Erne men led 0-09 to 0-02 at half-time having outclassed their opponents, but they took their foot off the gas in the second period to allow their opponents a glimmer of hope before pulling away again for a 1-12 to 0-09 victory.
While McGrath was pleased with parts of the display, he was dismayed at the sloppiness that crept into their play after the break, particularly with Rory Gallagher's men next up.
“In any championship match there’s two aspects you always look at," he told RTÉ Sport. "One is the result, which was good today; the other is performance, which in the first was good, at times very good, but in the second half it was very very patchy, sub-standard and it would not do at all in four weeks’ time against Donegal.
"There was a period in the second half where Amtrim scored five consecutive points. We were eight or nine ahead at that stage, we still had a buffer, but how often are you eight points ahead in a championship match? Not very often, so to concede five in a row is something that we have to look at what went wrong during that period of time and we’ve to ensure that doesn't happen in Ballybofey."
"Tomás Corrigan is a very cool, calculated individual, he’s very focused." - Pete McGrath
McGrath singled out Tomás Corrigan for praise after the classy forward scored 0-09 (0-05f) in a majestic performance.
Two picture-perfect sideline conversions tight angles late in the opening half particularly caught the eye as his quality lit up a largely mediocre contest.
“Tomás played very well, he’s on top of his game at the moment," McGrath added. "He’s worked very hard on his game. He’s a very cool, calculated individual, he’s very focused. He scored some very good points.
“All of that allowed big Sean Quigley a wee bit more freedom, and then Sean ghosted in for that goal which was critical in terms of putting the game to bed. Overall we’re happy with aspects of our performance, and other aspects are less than satisfactory and will have to improve.”
Antrim joint manager Gearoid Adams blamed a dismal first-half showing for the loss, as his men simply left themselves with too much ground to make up.
“We didn’t show up for that and basically we were playing catch-up from that," he said. "We did get it back to three points in the second half at one stage but they kicked in and got a goal towards the end. Fermanagh were the better team on the day. We’ve a lot of work to do.
"I’m devastated for the boys, we put a lot of hard work into it. We’d a good league campaign. We have to push up the divisions here and hopefully before that have a good run in the back door.”