On the first day of Wimbledon Tennis Championship in London on Monday, Serena Williams of the U.S. beat Gasparyan of Russia in the first round of the women's singles event. Serena defeated the Russian in straight sets 6-2, 6-1. In another women's singles match, Azarenka beat Kontaveit in straight sets 6-2, 6-1 in the first round.In the men's singles event, defending champion Djokovic beat Kohischreiber in straight sets 6-4, 6-4, 6-4.In the men's doubles event, the pair of Bopanna and Mergea will take on the duo of Smyczek and Vesely on Monday.