Roger Federer suffered a surprise defeat to Czech Tomas Berdych in the fourth round of the Sony Ericsson Open in Miami . Roger Federer loses to Agnieszka Radwanska at Sony Ericsson Open Fourth round in Sweden . Federer wastes a match point before losing deciding set on a tie-break . Sony Ericsson Open beats Tomas Berdych to advance to women 's semifinals .
Roger Federer loses to Agnieszka Radwanska at Sony Ericsson Open Fourth round in Sweden . Federer wastes a match point before losing deciding set on a tie-break . Sony Ericsson Open beats Tomas Berdych to advance to women 's semifinals .