Penang: P V Sindhu scored an upset victory over top seed Ji Hyun Sung of Korea, in a hard-fought three setter, to storm into the women's singles final of the $120,000 Malaysia Masters Grand Prix Gold badminton tournament, here on Saturday.

Sindhu beat her world No. 8 Korean opponent 21-19, 12-21, 21-10 in a semi-final contest that lasted one hour and nine minutes.

The world No. 12 Indian thus put herself on course for a fifth Grand Prix Gold event. She had won the same tournament in 2013 before bagging three more Grand Prix Gold tournament titles, at the Macau Open (2013, 2014 and 2015).

The two rivals had a 2-2 head-to-head record before Saturday's meeting and they opened the first set neck-and-neck till they tied at 11-all. From there, Sindhu nosed ahead by winning seven straight points.