Serving is my biggest strength so when I play Johanna Konta for a place in the quarter-finals I want to hit as many aces as possible - for two reasons.
Ukuseva yikho enginamandla kakhulu kukho ngakho uma ngidlala noJohanna Konta ukuze ngithole indawo emdlalweni owandulela owokuhlungela umdlalo wamanqamu ukushaya ama-aces amaningi engingakwazi ukuwenza - ngenxa yezizathu ezimbili.