Mangaonkar seemed to be suffering from a lack of motivation initially, but he pushed himself to stay in the game longer to eventually win the tie.

In a surprise result, Malaysia's Sanjay Singh defeated third seed Kristian Frost Olesen of Denmark 3-2 in a marathon 89-minute match.

Top seed Egypt's Zahed Mohamed cruised into the semi-finals with a 3-0 victory over Pakistan's Muhammad Asim Khan.

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