Wang takes third title in play-off
Graeme McDowell posted a final round of three-under-par 69 at the Qatar Masters in Doha to finish in a tie for 28th place on eight under par.
The Portrush man carded five birdies and two bogeys in his closing 18 holes.
Korea's Wang Jeunghun secured his third European Tour title in less than a year after beating South Africa's Jaco van Zyl and Joakim Lagergren in a play-off.
Wang birdied the first extra hole after Van Zyl three-putted for par from long range and Lagergren was unable to get up and down from a greenside bunker.
The trio had finished tied on 16 under par after Wang, who won back-to-back events in Morocco and Mauritius last May, left a birdie putt to win inches short on the 72nd hole.
At 21 years and 144 days old, Wang is the third youngest player to win three events on the European Tour after Matteo Manassero and Seve Ballesteros.
He is also the youngest in the world's top 50 and needs to remain there until the end of March to earn an invite to the year's first major at Augusta National.
"When I was young, I really wanted to play the Masters," Wang said. "I always imagined that I would play there. That's my dream, dream tournament."