British teenagers Felix Gill, Jack Pinnington Jones and Arthur Fery overcame big rankings gaps to win their openers in Wimbledon qualifying.
Gill, 19, beat Serbia’s Danilo Petrovic, ranked 823 places above him, 7-5 7-6 (8-6).
Fery, also 19, defeated 29th seed Prajnesh Gunneswaran of India, ranked 891 places higher, 6-1 7-6 (7-5).
Pinnington Jones, 18, overcame a deficit of 983 places in a 6-4 6-3 victory over Brazil’s Joao Menezes.
They are joined in the second round by Anton Matusevich, who came from behind to beat 16-year-old William Jansen 4-6 6-0 6-4 in an all-British encounter.
But compatriots Ryan Peniston, Aidan McHugh and Stuart Parker were all beaten.
In the women’s qualifying event, world number 459 Tara Moore beat Mexican world number 131 Renata Zarazua 7-6 (7-3) 6-2 and Eden Silva beat German fifth seed Anna-Lena Friedsam 6-4 7-5.
Eva Shaw, 16, put up a fight against Georgia’s Ekaterine Gorgodze, who needed four match points to close out a 6-2 6-2 win over the British junior.
There are three rounds of qualifying for Wimbledon, with the grass-court Grand Slam beginning on Monday.