Chowrasia, who started the final round in tied 17th place finished with a final round of four-over 76 as he tried to recover lost ground with three birdies on the back nine yesterday.
Chowrasia had a sedate start with two pars before he double bogeyed the par-3 third hole and then had a quadruple on par-4 fourth hole. That was six shots gone in two holes.
Shiv Kapur (72) was tied 52nd at even par for four rounds, while Gaganjeet Bhullar (76) at two-over was 69th.
The 38-year-old carded a four-under par final round 68 to overcome his countryman and first round leader Bradley Dredge, andd finish with a winning total of 14-under and earn a place in Paul McGinley's European team.
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With so much at stake, Donaldson showed the poise and determination of a future Ryder Cup star and raced out of the blocks, starting with three successive birdies before a bogey at the fourth pegged him back to two-under for the day, having found the trees from the tee.
A bogey at the tricky 17th hole did not prove costly for Donaldson as Dredge also ran up a five after driving into the water hazard.