Federer, Serena in Wimbledon masterclass as Wozniacki crashes

Caroline Wozniacki suffered fresh Wimbledon woe as the world number two suffered a shock 6-4, 1-6, 7-5 defeat against Ekaterina Makarova in the second round on Wednesday. Wozniacki, plagued by an invasion of flying ants during the Court One clash, saved five match points but has now failed to get past the last 16 in 12 visits to the All England Club. Seven-times champion Serena Williams fired 24 winners past Bulgarian Viktoriya Tomova to post a convincing 6-1 6-4 victory in 66 minutes on Centre Court and Roger Federer's quest for a ninth Wimbledon crown gained momentum with a flawless 6-4 6-4 6-1 win over Slovakian world number 73 Lukas Lacko in 89 minutes in other highlights. (Video: SNTV).