Jim Gavin's last and only championship defeat as manager left a deep impression on the Dublin boss.
Dublin's 3-14 to 0-17 point defeat to Donegal in the 2014 All-Ireland semi-final - Jim McGuinness's managerial masterpiece - left the Dublin supremo obsessed with the challenge of breaking down defensive minded teams.
According to Alan Brogan, speaking to the Throw-In podcast on Independent.ie, Gavin is understandably confident on the rare occasions when Dublin face a team naive enough to take them on in a shootout.
But it's strong, resourceful teams with a well organised defensive structure that force the Dublin manager to think hard.
"After Donegal beat us in 2014, Jim became obsessed about playing against teams with this style of play.
"When somebody sets up like that, that's when problems are going be caused. It is something they've worked relentlessly on in training.
"I know it's something that Jim Gavin and his management team have discussed at length over videos in meetings over the last couple of years."
And now here come Tyrone...
"This Tyrone team the next day is the first time we've seen a team who might be able to contain Dublin but may also be able to hit them on the break... Now that's a might. I'm not saying they definitely will.
"I know David Brady said he didn't think they're in the top three. I certainly think they're in the top three. It's a game I've been looking forward to for a couple of years."
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Tyrone have now accumulated 6-77 in four championship games. They have taken out Derry, Donegal, Down and Armagh, four counties with All-Ireland pedigree over the last 25 years by an average winning margin of 11-and-a-half points. Their average score posted is almost 24 points per game. They haven't felt a team breathing down their necks this summer.
Four-time All-Star Ollie Canning, elder brother of current Galway centre-half-forward Joe Canning, revealed to Newstalk's Off The Ball on Tuesday that he discovered stuff about his brother in last Saturday's interview with the Irish Independent's Vincent Hogan that he previously wasn't aware of.
After seeing his side get torn apart by Dublin in Croke Park, Monaghan manager Malachy O’Rourke believes there is an elite group in football pulling away from the rest of the chasing pack.
A spectacularly awful double-bill of football, before a full house in Croke Park last night, ended with Dublin moving closer to a third All-Ireland title in succession with the minimum of fuss. They were rarely under pressure and the match never looked remotely in danger of being mistaken for a contest. Dublin have cantered into the semi-finals, but the next day, one presumes, will be different.