The third ranked players in both the men's and women's singles have fallen in the second round of the Belgian Wheelchair Tennis Open.
In the men's competition, Brazil's Daniel Rodrigues fell to home favourite Jef Vandorpe, 6-4, 6-2.
The third ranked player in the women's draw, Katharina Kruger of Germany, suffered a heavy 6-0, 6-1 loss to Hui Min Huang of China.
Other than those results, the seeded players all won their way through to the quarter finals of the International Tennis Federation One Series event at the Geronsart Tennis Club in Jambes.
Women's top seed Marjolein Buis was especially dominant, the Dutch player beating France's Charlotte Fairbank 6-0, 6-0.
She is set to play sixth seed Maria Florencia Moreno in the quarter finals after the Argentine had to fight from a set down to beat Polina Shakirova.
Moreno eventually overcame the Russian 4-6, 6-3, 6-1.
In the men's draw, top seed and major Belgian hope Joachim Gerard easily beat Ricky Molier of the Netherlands, 6-2, 6-0.
Second seed Stefan Olsson had a much trickier time against another Dutch player, Ruben Spaargaren, needing three sets and a final set tie-break.
Sweden's Olsson eventually won 6-4, 5-7, 7-6 to gain passage to the last eight.
Competition is due to resume tomorrow with the quarter-finals of the men's, women's and quad singles competitions.