The Styal star, who played all four rounds in last week's Open Championship at Royal Birkdale, left it too late to make a charge for his third Challenge Tour title in five outings.
A third round 79 at Vale Hotel Golf and Spa Resort near Cardiff saw to that but he hit back with an eagle followed by five birdies in six holes from the 10th to tie 27th on three-over-par.
And he had the record in his grasp until he bogeyed the last two holes. Horsey finished seven shots behind Michael McGeady who continued Ireland's extraordinary run of success this season with his maiden victory.
Triumph
On the back of Padraig Harrington's Open Championship triumph - which took the number of Irish wins on the European Tour to six - McGeady swept to victory following a two-hole dramatic play-off with overnight leader Joel Sjoholm of Sweden.
McGeady said: "This win's massive for me - those four birdies in five holes on the back nine got my round going, and from there on in I just tried to play steady golf because I knew four under would have a chance - and so it proved."
AMERICAN Bruce Vaughan staged a remarkable comeback to beat compatriot John Cook in a sudden death play-off to win the Senior Open Championship on a thrilling final day at Royal Troon.
The pair finished on a six-under-par total but it was Vaughan who held his nerve on the first extra hole to land the biggest pay cheque of his career - €199,000euro.
Bernhard Langer and Greg Norman had looked poised to mount a serious challenge, especially when the Australian birdied five of the first seven holes, but both faltered late on to finish fourth and tied fifth respectively. Manchester's Andrew Murray closed with 77 to tie 54th on 14-over-par.
SWEDE Mikael Lundberg captured the Russian Open in Moscow for the second time in three years after a final round of 68 for a 21-under-par total to win by two shots from Spain's Jose Manuel Lara.
England's Benn Barham birdied the last to finish third, three off the pace, and Macclesfield's Jamie Donaldson signed off in style with a 66, minus 12 all told, to tie 32nd in a tournament he won in 2001. Southport's Lee Slattery joined him on the same mark after 71 with Chester's Garry Houston in 30th spot after closing with 70.
CHEZ Reavie overcame a shaky start to his final round to secure his first PGA Tour victory at the the Canadian Open. Reavie carded a one-under-par 70 to finish three strokes ahead of Billy Mayfair (68).
DAVID Shacklady shredded the course record in a PGA North Region pro-am at Knott End, firing 10 birdies in a nine-under-par 60. The Mossock Hall maestro shaved three shots off the old mark set at by Chorley's Mark Bradley and equaled by Myerscough's Richard Daniels who took second place.
SWEDEN'S Helen Alfredsson won the Evian Masters in Park after beating Korean Na Yeon Choi and Angela Park, from Brazil, at the third extra hole.
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