World No. 88 Sathiyan had to fight hard for his place in the next round. He got the better of Hong Kongs Man Ho Kwan 9-11, 11-7, 8-11, 11-7, 11-3, 8-11, 11-3 first but then had to dig deep to prevail against Romanias Ovidiu Ionescu.
He eventually won 13-11, 8-11, 11-8, 3-11, 3-11, 11-8, 14 -12.
Later in the evening, Sathiyan did one better, upsetting former world junior champion Jang Woojin 4-0. He is now just one step away from making the main draw.
He began his campaign on a losing note against, going down to Olave 5-11 in the opening game. But he came back strongly to win the next four (11-5, 13-11, 11-5, 11-7) for an impressive victory.
He was much more assured against 64-ranked Robinot, winning 11-5, 13-11, 11-5, 11-7.
Indias other top players, Sharath Kamal Achanta and Harmeet Desai, however, bowed out of the tournament after losing their respective second matches Wednesday.
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