Wow. That must be a great experience for Jon. Hope he learns as much as he can from the maestro.
Quite obvious that the choice of a lefty as Roger's sparring partner is Nadal-related...
Great thing of Roger to do for Lil J, although i must agree with SW that his choice of a lefty is a bit selfish and Nadal-related
But all in all, this should really do wonders for Jonathan