Top-ranked Japanese players Mima Ito and Tomokazu Harimoto are through to the quarter-finals of the first-ever World Table Tennis (WTT) tournament.
Ito defeated Germany's Nina Mittelham and will face Yang Ha-eun of South Korea - an Asian Games medallist in 2014 - in the next round in Qatar.
Sixteen-year-old Miyuu Kihara is also into the WTT Contender Doha quarter-finals after Romania's Bernadette Szőcs was unable to build on yesterday's win versus Chinese Taipei's Cheng I-Ching - the world number eight.
Kihara, who won 8-11, 11-8, 11-1, 11-9, joins Ito and Hina Hayata as one of three Japanese players in the last eight.
Over in the men's singles, top-10 players Harimoto, Mattias Falck, Lin Yun-Ju and Hugo Calderano all advanced to the quarter-finals.
Harimoto, 17, overcame Lee Sang-su of South Korea 11-9, 10-12, 11-4, 11-9 and will face Lee's compatriot Cho Dae-seong next.
Swede Falk and Taiwanese teenager Lin won in straight games, while Brazil's Calderano fought back to overcome South Korean An Jae-hyun 9-11, 11-7, 11-5, 11-4.
WTT Contender Doha - the first full tournament being staged by the International Table Tennis Federation's new commercial vehicle - lacks Chinese and Hong Konger players after the two national teams pulled out for pandemic-related reasons.
Quarter-finals and semi-finals are due to be contested tomorrow.