The injury according to her happened during training before the Olympics and it got worse during the match
The ace shuttler has recently clinched her 2nd Australian Open title
Nehwal eked out a 11-21 21-14 21-19 over the World No. 12 Sun; this is Saina's second Australian Open victory
The Indian ace shuttler dominated the game right from the start by beating Wang Yihan of China
The eighth-seeded Indian, who has won three times at Jakarta, was beaten 22-24, 11-21 by her Spanish opponent in a contest that lasted 47 minutes
Saina has now beaten the Korean nine times in 13 meetings