D’Souza shot 14-under 202 in the three-round tournament. He took the individual medalist honour and led South Mountain to Team Event victory.
The two-day, three-round event was played at Eagle's Nest Golf Club and featured a field of six teams. South Mountain claimed the team champion title with 23-under-par, two ahead of the hosting Ottawa University. D’Souza was the only player able to score 60s in all three rounds. Joe Baldeck from the Benedictine University finished 2nd with 4 shots back.
D’Souza was the only amateur golfer to make the weekend cut with 72-70 rounds in the 2017 UBS Hong Kong Open, which was only his first appearance in the showpiece event. But the highlight of his campaign was still to come as the local amateur star fired a superb five-under 65 in the third round to prove he belonged with the big boys.
He finished on even-par 280 for a tie for 41st place - but ahead of four-time European Tour winner Matteo Manassero of Italy, Thai veteran Thongchai Jaidee and Chinese star Liang Wenchong.