Hoey finished at 16-under-par 272 after coming into the final round with a five-stroke advantage to claim his fifth career European Tour title.
He birdied No. 7 and 8 and came into the back nine with enough momentum to hold off Alexandre Kaleka down the stretch at Tseleevo Golf & Polo Club.
Kaleka ended his day with a bogey, turning in a final-round 4-under 68 and settling for a second-place tie at 12-under 276 with Matthew Nixon (69).
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