South African Dean Burmester stayed calm under pressure to win the SA Open Championship on Sunday.

Burmester closed with a 68 at Blair Atholl Golf & Equestrian Club to finish 11-under, three strokes ahead of fellow South African Ryan Van Velzen, Italy's Renato Paratore and Sweden's Jesper Svensson.

The 34-year-old, who primarily competes in the LIV Golf League, was in danger of missing the cut or even withdrawing due to illness on Friday, but he made it through to the weekend with nothing to spare after a 74.

A third round of 65 left him two shots off the lead and a final round containing six birdies and two bogeys was enough to secure a fourth DP World Tour title.

"Back-to-back! I've never done that before so that was special," Burmester said.

"It's obviously one as a South African that I’ve always wanted to win. To be involved in this tournament and to win it, with a bank that used to sponsor me and got me off the ground when I was just a kid, is super special.

"So to be the SA Open champion is something I'll never forget. It's a tournament I watched growing up and I watched a lot of legends."

Van Velzen and compatriot Jayden Schaper had shared the overnight lead but could only shoot 73 and 74 respectively, while Italy's Matteo Manassero shared the lead after holing from 100 feet for an eagle on the fifth, but eventually signed for a 72 to finish in a tie for fifth.

Defending champion Thriston Lawrence carded a closing 67 to finish in a tie for 10th.