The 19-year-old revelled in what he described as the best win of his career as he clinched a battling 14-12, 9-11, 11-9, 6-11, 11-7, 5-11, 11-9 triumph against the Japanese, who came into the contest as the strong favourite.

Gerassimenko had the better of the early exchanges before Matsudaira, struggling for form as of late, levelled the match by taking the second.

The pair then traded games to send the encounter into a decider and the Kazakh player held his nerve to record a shock victory.

"It was a very good match from my side and to be in the quarter-final is the biggest result of my career so far," he said.

"We had a long talk about the tactics with my coach.

"I knew he had a very fast game and good service."

He added: "But I feel good and comfortable in a fast rallies so I like to play this way - that was the most important.

"After winning the first set I started to believe that I can win.”

Gerassimenko will go up against another Japanese opponent, Yuto Muramatsu, who comfortably overcame Hampus Norberg of Sweden 11-5, 11-4, 11-3, 11-5.

Japan's Mizuki Oikawa was not able to follow his compatriots into the last eight as he was beaten 15-13, 11-6, 11-7, 11-6 by Frenchman Stephane Ouaiche.

In the women’s singles competition, there was no such trouble for the top seed as Hitomi Sato of Japan cruised into the quarter-finals with a dominant win in straight games against Austria’s Amelie Solja.

The Japanese player proved far too strong for her opponent, progressing with a 11-6,1 11-2, 13-11, 11-9 victory.

Next up for Sato will be Matila Ekholm of Sweden, who bounced back from winning just a solitary point in the first game to beat Georgina Pota of Hungary 1-11, 11-3, 11-9, 11-9, 11-4.