2013 Sony Open Tennis – Day 8

2013 Sony Open Tennis - Day 8

KEY BISCAYNE, FL – MARCH 25: Serena Williams serves against Dominika Cibulkova of Slovakia during their fourth round match at the Sony Open at Crandon Park Tennis Center on March 25, 2013 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)