In Wimbledon Tennis Championship, world number one Serena Williams, D. Gavrilova of Australia, C. Mchale of USA, and Kr. Pliskova of Czeck republic have won in the opening rounds of Women's Singles. Serena is the reigning champion and with 21 Grand Slam titles to her kitty is chasing Steffi Graf's record of 22 titles. In Men's singles category, Stanislas Wawrinka of Switzerland, N. Kyrgios of Australia, R. Gasquet of France, A. Ramos-Vinolas of Spain, D. Brown of Germany and J. Monaco of Argentina have registered their wins in the first round.