McPhilbin became a new 'Cinderella Man' when he biffed Leon Williams to last-gasp defeat to rip away the British cruiserweight title in January, 2012.
But whoever was writing his scripts ran out of ink after that.
A time keeper's blunder robbed McPhilbin of a career-best win against boyhood hero Enzo Maccarinelli, then he was denied a knockdown when he battled Nathan Owens in 'Prizefighter' earlier this month.
That proved decisive when the judges' scores were totted up after three scrappy rounds - costing McPhibin an extra £4,000 - and 'Mr Block' hopes his Irish roots will bring him a change of luck.
He meets Stephen Reynolds in an eliminator for the Irish cruiserweight belt in County Mayo a week on Saturday (June 8), then heads home to box in Nottingham two weeks later.
McPhilbin is sure to sell plenty of tickets for the big fight night at Clifton Leisure Centre - and will have his supporters in Ireland as well.
His late grandparents were from Galway and he said: "My cousins live in Castlebar, so they should be there to cheer me on."
McPhilbin has had an up-and-down pro career.
At the start, his ambition was to win the Midlands Area heavyweight title, but he won British cruiserweight honours before his feel-good fairytale became a hard-luck story.
"I don't moan about what's happened to me," said the 27 year-old, "but I reckon I'm due a change of luck.
"There's no reason why I can't win the British title back and I want a rematch with Chris Keane as well.
"He's a top fighter and a brilliant bloke, but I was all over the place when I boxed him.
"I've got to earn another big fight and now I've got my chance.
"If I beat Reynolds, win in Nottingham, then pick up the Irish title I'm back in the mix again."
McPhilbin says he "can't wait" to box in Nottingham.
He says the venue is "a 15-minute drive" from his home and added: "It should be a great night."
Leigh Wood tops the bill at Clifton Leisure Centre. He meets Ian Bailey for the vacant British Masters featherweight title and the show also features Jason Booth, Chris Goodwin and Terry Maughan.
Tickets are available from 07557-911568.