Defending champion Saina Nehwal overcame an opening game deficit to reach the semifinal of the Indonesian Open badminton tournament at Jakarta today. Saina, who yesterday jumped three spots to third in world rankings after winning the Singapore Super Series, looked rusty against Ella Diehl of Russia in the first game and was doing the catch up job from the start before losing it 17-21.Saina and the eight seeded Russian were neck-and-neck at 5-4 before the Indian pressed the accelerator in the second to take it 21-11.In the decider, Saina took a straightaway 6-0 lead and though the Russian reduced the gap 13-10, the Indian ran away with the game 21-16 and the match in 58 minutes. In the semifinal tomorrow, Saina will meet fourth seeded Eriko Hirose of Japan who beat fifth seeded Jie Yao of the Netherlands 21-19 10-21 22-20 in another quarterfinal match.