(MENAFN - Muscat Daily) The Oman ITF Junior U18 tennis tournament witnessed its first major upset on Tuesday as Dominique Covington, the top seed in the girls' event, crashed out in the first round at the Sultan Qaboos Sports Complex. The British girl was shown the door by the unseeded Apolline Rassat of France 3-6, 3-6.In the boys' category, the top-seeded players continued to dominate as Turkey's Mert Adanali and Cem Hizlialp posted victories. No 4 Adanali defeated Indonesia's Armando Soemarno 6-3, 6-0, while fifth seed Cem Hizlialp edged out Youssef Sherif of Egypt 7-6, 6-1.Results: Boys' singles (1st round): Oleg Koval (Ukraine) beat Georgiy Pochay (Turkmenistan) 7-6, 6-7, 6-3; Josef Dodridge (Britain) beat Vasiliy Kraynikovsky (Russia) 6-0, 6-1.Girls' singles (1st round): Julia Soica (France) beat Arina Umanskaya (Russia) 6-4, 6-1; Habiba Lasheen (Egypt) beat Ramya Natarajan (India) 6-4, 6-2; Anna Blinkova (Russia) beat Luna Meers (Belgium) 6-0, 6-4.Boys' doubles (1st round): Denis Borisov / Stefan Frljanic (Russia / Canada) beat William Flavel / Alexandros Vakouftsis (Britain / Greece) 6-4, 6-2; Konstantinos Ilia / Michail Pervolarakis (Cyprus) beat Altug Celikbilek / Ata Hergunvarim (Turkey) 6-4, 6-3; Peter Bothwell / Tallon Griekspoor (Netherlands) beat Farid Hajizada / Eleftherios Theodorou (Azerbaijan / Greece) 6-3, 6-2.