Number 22 and still counting as Serena equals Graf

By Martyn Herman LONDON (Reuters) - It was third time lucky for American Serena Williams as she finally matched Steffi Graf's professional era record of 22 grand slam singles titles by beating Angelique Kerber to claim a seventh Wimbledon crown on Saturday. Top seed Williams was forced to play some of her best tennis by resolute Kerber in an engrossing Centre Court duel in which her formidable firepower proved decisive in a 7-5 6-3 over her German opponent. Kerber had stopped Williams in the Aus