Anyone for tennis?

These are the university tennis courts. Today's blip is in honour of the start of Wimbledon. As a keen tennis player, I couldn't restist. Notice what the balls are in - and I thouhg the BBC team were being original at the winter olympics last year with all their gear ina shopping trolley. Nobody can say the Chiese aren't resourceful! So, if you find the odd shopping trolley around the estate as happens in Oxford, you have one idea of what to do with it ;)