Australians Cameron Percy and Mark Hensby were nine shots off the pace but good enough for top-10 finishes.

Playing on the final start of a minor medical exemption, Brehm arrived in Puerto Rico with some pressure and his wife Chelsey as his caddie.

He needed to win or finish solo second to maintain his PGA Tour card and he did just that.

The 35-year-old Brehm carded a bogey-free five-under-par 67 in the final round in windy conditions to get to 20-under 268.

With the event played opposite the Arnold Palmer Invitational in Orlando, Florida, Brehm received a two-year exemption and a spot in the PGA Championship, but will not be exempt for the Masters.

RIGHT: Cam Percy had the low round of the final day to take a spot in the top-10 alongside fellow Aussie Mark Hensby. PHOTO: Mike Mulholland/Getty Images.

He will also get a start at The Players Championship next week.

"I didn't really pay much attention to my back being up against the wall," Brehm, who entered the week No.773 in the world rankings, said.

"I just felt like this week I had everything to win and nothing to lose."

Max McGreevy shot a 69 to finish alone in second at 14-under.

Brandon Wu (69) and Tommy Gainey (70) tied for third at 13-under.

Callum Tarren of England (70) and Chad Ramey (71) shared fifth at 12-under.

Percy, with the equal low round on Sunday, and Hensby, who bogeyed his final hole, were the leading Australians at 11-under in a tie for seventh.

"I just felt like this week I had everything to win and nothing to lose." - Ryan Brehm.

Percy, despite an opening hole bogey, carded a sparkling round off six-under 66 to vault 29 places up the field while Hensby (69) had an eagle.

Aaron Baddeley (72, eight-under) and Greg Chalmers (74, five-under) slipped back on Sunday to finish T28 and T41 respectively while Brett Drewitt (69, four-under) was T50.

The Brehms became the first husband-wife caddie team to win since Justine and Patrick Reed in 2013.

"It was great having Chels up there with me caddying. It was a special week," Brehm said.

"I don't know, there was just something special about it from the moment we landed."