Two-time Wimbledon champion Serena Williams returns to SW19 on the back of a worrying run of form, despite claiming the Australian Open in emphatic fashion at the start of the year.

Since her 6-0 6-3 hammering of current world number one Dinara Safina in Melbourne, Serena failed to land any of the six tournaments entered before falling short in Paris once again.

Injuries to her left thigh and right knee have played a major part in those defeats, but the powerful American can never be overlooked on grass.

Crowned Wimbledon champion in 2002 and 2003, Serena reached her third final the following year before losing out to sister Venus 7-6 6-4 in 2008.

Her 2004 defeat by Maria Sharapova and last year's loss are likely to serve as extra motivation for the highest-earning female athlete on the planet to reign again.