Sydney: Saina Nehwal dug deep for a fighting win over Thai rival Ratchanok Intanon while Kidambi Srikanth too continued his good run to make the semifinals of the USD 750,000 Australian Super Series Badminton tournament here today.

In an exciting quarterfinal between Olympic bronze medallist Saina and 2013 World Champion Ratchanok, it was the seventh seeded Indian who managed to upstage the second seed 28-26 21-16 after a 56-minute hard-fought women's singles battle.