McBirney came with a late flourish to make a winning appearance on turf on a marathon eight-race card at Haydock this afternoon.
The Paul d'Arcy-trained four-year-old had been restricted to four races on the all-weather but bounced off the ground to take the honours in the Sportech Racing Handicap.
The 14-1 shot, ridden by 3lb claimer Andrew Heffernan, collared long-time leader Amazing Blue Sky in the final furlong to score by three-quarters of a length.
"I've been waiting for the ground to run him because I wasn't sure as he hasn't been the easiest of horses to train and he's just been coming right," said D'Arcy.
"I wouldn't have risked him on firm, but this is beautiful ground.
"He's won from a wide draw, so that has to be encouraging, and they went off too fast, which suited him."
Evervescent (5-1) could be bound for the Coventry Stakes at Royal Ascot after putting up a promising display to win the Sportech PLC Maiden Auction Stakes.
The youngster, trained by Stan Moore and owned by a 14-strong syndicate of lawyers, showed he had benefited from a Goodwood debut outing to score by a length and a half from Tight Lipped.
"He's going to be a real nice horse. He's still got his winter coat and I thought he still need the experience," said Moore.
"He's the owners' first horse so we might take him to Ascot as long as he comes out of this the right way."
After being in the first four in his first five races, Chosen Character (11-2) got off the mark in tremendous fashion in division one of the Betdaq The Betting Exchange Handicap.
The Tom Dascombe-trained three-year-old burst clear of the pack in the final furlong to romp home by five lengths from Prince Of Burma.
"I was going to run him in a 0-70 but the owners live locally so I thought I'd run him in this race," said Dascombe.
"They've gone a million miles an hour and it's set the race up for two horses coming from the back.
"We've won by five lengths so I suspect the handicapper will get his revenge on me now."