Roger Federer loses to Tomas Berdych at Sony Ericsson Open fourth round in Miami . Federer saved a match point before losing deciding set on a tie - break . Venus Williams beats Marta Radwanska to advance to Wimbledon 's semifinals .
Roger Federer loses to Tomas Berdych at Sony Ericsson Open fourth round in Miami . Federer wastes a match point before losing deciding set on a tie-break . Venus Williams beats Agnieszka Radwanska to advance to women 's semifinals .