British pair Joshua Ward-Hibbert and Kyle Edmund are through to the quarter-finals in the Australian Open boys' singles with wins over Nikola Milojevic and Kimmer Coppejans respectively.
Yorkshire's Edmund, seeded seventh, progressed with a fine 7-6 (9-7) 6-1 victory over his Belgian opponent.
Nottingham's Ward-Hibbert, 18, beat the ninth-seeded Serbian 6-3 6-2 after seeing off all 11 break points faced.
They will respectively face Australian Luke Saville and Canada's Filip Peliwo.
Ward-Hibbert enjoyed a second win of the day as he and Liam Broady beat the second-seeded Belgian pair of Julien Cagnina and Thiago Monteiro 7-6 (7-3) 6-3 to advance to the last four of the boys doubles.
Broady and Ward-Hibbert won the doubles title at the prestigious Orange Bowl in December.
In the quad wheelchair event Peter Norfolk beat Andrew Lapthorne 6-4 7-6 (8-6) in their all-British match.