Check out this fun video of Rafael Nadal and Novak Djokovic playing tennis on a boat near Perito Moreno Glacier in Patagonia, Argentina to promote t and t – tennis and tourism – while they’re on the David Nalbandian farewell tour. You can see they’re playing very carefully, almost as if it were table tennis, because one slip and its “Titanic” time – but is this crazy or what? I like the moment Nole calls Rafa to the net. I think he’s suggesting Rafa try to hit the glacier with one of his serves.