The 19-year-old held the clubhouse lead Sunday after a final round 63 but storms stopped play with several groups still on course, including co-leader Jose Toledo who had three holes remaining.
The 30-year-old from Guatamala put the result beyond doubt when play resumed early Monday, two birdies in his last three holes seeing him to 18-under and relegating Ruffels to outright second at 16-under.
The result, Ruffels’ best since he joined the third tier Tour last year, moves the Victorian to eighth on the Order of Merit.
The top five money earners at season’s end earn status on the Web.com Tour with the winner of the Order of Merit receiving the bonus of a full card.
Ruffels, who played the PGA Tour’s Zurich Classic with Kyle Stanley last week and held the first round lead, will likely now focus his efforts on winning the money list in South America as he tries to make his way to the PGA Tour.
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