The Aidan O'Brien-trained Kingfisher swooped late to collar Bow Creek and land the Betfair Cash Out Dee Stakes at Chester on Friday.
The 11/4 joint-favourite looked in trouble as the field turned for home and it looked as if Mark Johnston's three-year-old had given the field the slip but jockey Joseph O'Brien managed to galvanise his mount and the pair stayed on strongly to record a length victory.
" He jumped out nicely and we got a good position but the early pace was very slow," said O'Brien.
"Jamie (Spencer, on board Randwick) then kicked on and injected some pace which just caught me flat footed a bit. Once we straightened up, he started to fly and he'll be suited by another couple of furlongs.
"I think he's a lovely horse. Things didn't got too right in the race but he still got away with it. I would imagine he's not too far off our best - I quite like him."
Kevin Buckley, Coolmore's UK representative, echoed O'Brien's sentiments.
"Joseph was delighted with the way in which he galloped all the way to the line and he's finished off the race very well. We were happy with Century (O'Brien's other runner which finished fourth) and he finished off his race well as well.
"He'd have preferred a much stronger pace and, while he handled the ground, he'd be one that wants it a lot quicker."
Sky Bet quoted Kingfisher at 50/1 for the Investec Derby following the race and the firm's Michael Shinners felt that Coolmore have better options has they look to land the Epsom classic.
"It was a decent performance from Kingfisher but Coolmore look to have stronger candidates and it still looks like 2000 Guineas runner-up Australia is the one they all have to beat."