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Sea Island, GA (SportsNetwork.com) - Robert Streb birdied the second playoff hole Sunday to defeat Brendon de Jonge and Will MacKenzie to win The McGladrey Classic.

Streb birdied four straight holes on the back nine en route to a 7-under 63, the low round of the day, and was the first player to post a 14-under-par 266. De Jonge carded a 5-under 65, while MacKenzie shot 2-under 68.

They returned to the 18th hole for the playoff and MacKenzie found a greenside bunker with his approach before Streb and de Jonge hit the green with theirs.

MacKenzie was eliminated after missing a par putt while Streb and de Jonge 2- putted for pars.

De Jonge knocked his tee shot at the par-3 17th, the second extra hole, to about 20 feet. Streb stuffed his tee ball within four feet. De Jonge's birdie effort slid past the edge.

Streb rolled in his birdie putt for his first PGA Tour win.

"The wait was a little nerve-wracking and those last two little putts I was pretty shaky. Very thrilled," Streb said. "I was pretty nervous over those short putts, but managed to work it out, and things went in my favor."

Defending champion Chris Kirk posted a 3-under 67 to move into a share of fourth place at minus-12. He was joined there by Ken Duke (66), Kevin Kisner (65) and Russell Henley (69).

Mark Wilson (67), Fabian Gomez (68), Andrew Svoboda (71) and Kevin Chappell (65) tied for eighth place at 11-under-par 269 on the Seaside Course at Sea Island Resort.

Streb tripped to a bogey at the first, but bounced back with three birdies in a 4-hole span from the third. He dropped in back-to-back birdies from the eighth to make the turn at 11-under.

After three pars in a row, Streb 3-putted for bogey at the 13th. He erased that mistake with a 5-foot birdie effort on the 14th, his first of four straight birdies.

Streb followed with a 2-putt birdie on the par-5 15th and made it three in a row by draining a 19-footer birdie at 16. Streb grabbed a share of the lead when he poured in a 33-foot birdie putt at No. 17. He parred the last, then waited nearly an hour and a half for the final group to finish.

De Jonge, who was in the penultimate group, flew into a share of the lead early on as he birdied the first three holes. He followed that with six straight pars.

The Zimbabwean converted a 12-footer for birdie at 10. He ran in a 41-foot birdie chance at the 12th to gain a share of the lead at minus-14. De Jonge parred the last six holes to end there.

"I didn't birdie the par-5 in regulation. I had a very easy bunker shot, but other than that, I didn't leave much out there," stated de Jonge of the par-5 15th. "What can you do? He hit a great shot, and as I said, it's nice for him to have a birdie. It's a good way to win the tournament.

MacKenzie birdied the fourth and eighth to move to 14-under. He ran off seven consecutive pars from the ninth to remain there. After a 3-putt bogey on No. 16, MacKenzie drained a 5-footer for birdie at 17 to regain a share of the lead. He parred the last to get into the playoff.

NOTES: Streb earned $1.008 million for the victory. He has made the cut in the first three events of the season and has finished in the top 10 in the last two tournaments after sharing 31st in his first start ... Streb's best previous PGA Tour finish was a tie for second at the 2014 Zurich Classic of New Orleans ... Tournament host Davis Love III closed with a 66 and tied for 41st.