<Tr> <Td> United States </Td> <Td> Serena Williams </Td> <Td> </Td> <Td> 2002--04 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> United States </Td> <Td> Venus Williams </Td> <Td> </Td> <Td> 2007--09 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> United States </Td> <Td> Serena Williams </Td> <Td> </Td> <Td> 2008--10 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Australia </Td> <Td> Margaret Court </Td> <Td> </Td> <Td> 1970--71 </Td> <Td> </Td> <Td> </Td> </Tr>

Who has federer lost to in wimbledon finals