nice looking dog you have mate,
I had a Border collie up untill about a month ago he used love to play with ball and was really healthy nice looking and intelligent just like yours.
My Mum took him out for a run in the fields out the back of where I live and he caught a rubber dog bone she was throwing to him in his mouth, (a lot bigger than a golf ball) which he choked on and sadly died, so be careful with a small ball.

How can I put a few pictures up of him? ive got a couple of good ones!