Brad Bryant shot 65 to finish second.
Calcavecchia had six birdies and chipped in for eagle on the par-5 16th hole on Richelieu Valley’s Vercheres Course. He finished at 16-under 200.
“I made some nice 4-footers for pars, which were nice,” he said. “I get a little shaky on those on occasion and for some reason today I just felt good on them, and then that 16th happened and I figured that even if I bogeyed the last two holes, I’d be fine, which I was.”
Augusta native Larry Mize tied for 20th place after 71 for 213.
LPGA TOUR: In Waterloo, Ontario, Brittany Lang won the Manulife Financial LPGA Classic for her first LPGA Tour title, making three consecutive birdies on the par-5 18th in a playoff.
Lang missed a birdie try on the hole in regulation, leaving her tied with Hee Kyung Seo, Inbee Park and Chella Choi at 16-under 286. Choi was eliminated on the first extra hole, and Park dropped out on the second.
Lang closed with her second consecutive 67, Choi had 63, Seo had 67, and Park shot 69.
EUROPEAN TOUR: In Pulheim, Germany, Danny Willett, of England, won his first European Tour title after beating Marcus Fraser, of Australia, on the fourth hole of a sudden-death playoff at the BMW International Open.
Willett shot a final-round 73 for an 11-under total of 277 to finish with a share of the lead with Fraser, who shot 71 in rainy conditions on the Gut Larcenhof course.
Former Augusta State golfer Oliver Wilson shot 73 to tie for 18th place at 282.
NATIONWIDE TOUR: In Wichita, Kan., Casey Wittenberg won the Wichita Open for his second tour victory of the season, closing with 5-under-par 66.
He won by two shots over Justin Hicks (67 on Sunday)and third-round leader Jim Herman (70). Wittenberg finished at 18-under 266.
Augusta’s Scott Parel shot 69 and tied for 48th place at 279.
BRITISH AMATEUR: In Troon, Scotland, Northern Ireland’s Alan Dunbar defeated Austrian teenager Matthias Schwab 1-up to win the British Amateur at Royal Troon and earn an invitation to the 2013 Masters Tournament.