England's Alfie Hewett started his Australian Open men's wheelchair singles title protection with triumph over Japan's Takashi Sanada.
The 26-year-old won 6-1 7-5 and will play Alexander Cataldo of Chile in the quarter-finals. English fourth seed Gordon Reid additionally won on Tuesday, easily beating Dutch player Maikel Scheffers 6-1 6-2.
Andy Lapthorne won in the main round of the quad wheelchair singles, however individual Briton Greg Slade lost.
Lapthorne acquired a 6-4 7-6 (7-1) accomplishment over Diego Perez of Chile and Slade, who was given a special case to show up in the competition, lost 6-3 7-6 (7-3) to Chile's Francisco Cayulef.
In the ladies' wheelchair singles, England's Lucy Shuker has an extreme undertaking as she takes on Dutch favorite Diede de Groot, a victor of each of the four Huge homerun competitions in 2023.
Hewett and Reid are four-time reigning champs in the duplicates and start their title safeguard on Wednesday. The pair are in various parts of the singles draw and could meet in the last. Reid, 32, will confront Tom Egberink, one more Dutch rival, in the quarter-finals.