 In 2006, Natsir and Widianto won the Asian Championships in mixed doubles and four World Grand Prix titles.They won the BWF World Championships in both 2005 and 2007, as well as runner up in 2009 Hyderabad.While Natsir had previously focused on mixed doubles with partner Nova Widianto, in 2007 she began playing women's doubles with Vita Marissa.