Serena Williams (United States)

Always a fierce competitor, the defending champion will be determined to hold on to her crown after relinquishing her French Open title in the semi-finals.

Having completed the non-calendar-year 'Serena Slam' by lifting the Australian Open in January, Serena has been in stupendous form all season.

Always a fierce competitor, the defending champion will be determined to hold on to her crown after relinquishing her French Open title in the semi-finals. Immensely powerful off both flanks, she can blast away most opponents. It will take a superlative effort to dethrone her.