JAKARTA (AFP) - Lee Chong Wei beat Denmark's Jan Jorgensen in a hard-fought final to win the Indonesia Open on Sunday, raising hopes that the Malaysian badminton ace may be on course for Olympic victory.

The world No. 2 battled back from one game down to defeat Jorgensen 17-21, 21-19, 21-17 in a thriller that was marked by a series of long rallies and dramatic smashes.

Fifth seed Jorgensen dominated in the early stages of the final and appeared to be heading for victory as he took the lead in the second game.

But second seed Lee fought back doggedly, winning a series of tough rallies to cling on.

By the final stages of the third game, Lee was firmly in control, winning point after point as Jorgensen's initial confidence faded.

Lee said he was "very happy" to win his sixth Indonesia Open title after the tough match, that lasted one hour and five minutes, but admitted he did not play well at the start.

"In the second game he was leading 19-17, I was preparing myself to lose," he said.

Jorgensen said he was "very disappointed" at his loss in the tournament, which took place at the Istora Gelora Bung Karno Stadium in Jakarta.

"I felt that I had the game in my hand and I think I should have won it," he said.

The victory will be a boost for Lee, who will regain the top ranking, as he heads to Rio this summer, where the 33-year-old will again try to win Olympic gold.

At the last two Olympics, he lost in the final to his arch-rival, China's Lin Dan.

In another boost for the Malaysian, Lin was knocked out in Jakarta earlier in the week, losing in a shock defeat by unseeded Indonesian Jonatan Christie.

Top seed Chen Long of China withdrew, blaming an injury.

Despite his loss in the final, Jorgensen's impressive performance will be a boost for the Danes, coming hot on the heels of their maiden Thomas Cup victory last month.

He said the performance "gives me confidence" going into the Olympics, and added: "I think I have shown today that I'm very dangerous."

In the men's doubles final, South Korean top seeds Lee Yong Dae and Yoo Yeon Seong came from behind to beat Chinese fifth seeds Chai Biao and Hong Wei 13-21, 21-13, 21-16.

In the women's singles final, unseeded Tai Tzu-ying of Chinese Taipei beat fourth seed Wang Yihan of China 21-17, 21-8, capping a miserable badminton tournament for China.

Chinese pair Tang Yuanting and Yu Yang were also beaten in the final of the women's doubles, although Xu Chen and Ma Jin won the mixed doubles.