I do. The "most beautiful" game in tennis was possessed by Suzanne Lenglen in the 1929s. Nobody brought tennis as close to ballet and figure skating as she did. In addition, her fashion statements were infinitely bolder and more interesting than Federer's. To quote from Wikipedia:
"Not only her performances on the court were noted, however. She garnered much attention in the media when she appeared at Wimbledon with her dress revealing bare forearms and cut just above the calf, while all other players competed in outfits covering nearly all of the body.[5] Staid Brits also were in shock at the boldness of the French woman who also casually sipped brandy between sets."
In addition, it is widely suspected that among the many sources of entertainment in the private secret parties held by the wealthiest and most decadent Europeans, they organize indoor games in their mansions among incredibly svelte ballet dancers who have simultaneously been taught to play a smooth brand of tennis with cotton balls while gliding through the court to the tune of ethereal music. Apparently there is nothing more beautiful than these games. Following such leads, I once had a dream, around the time when Rafael Nadal and Ana Ivanisevic were reported to be flying together from Indian Wells to Miami, or bathing in Mallorca, I think back in 2008. In this dream, they were playing a kind of slow motion game in an endless commercial filming for Kalvin Klein underwear. It was so beautiful. The ball, a real tennis ball but white, went through the air so slowly that they had time to do all kinds of pirouettes and summersaults, then land perfectly on their feet in front of the ball to hit it with angelical looking strokes. They were so graceful and quick that they could switch sides without stopping play. It went on and on and on, there was no score because the point never ended, and it was breathtakingly beautiful to watch. There were all kinds of celebrities watching the game, which was taking place on the very large shiny dancing floor of some disco place. Incongruously, when a back door opened, I saw a dingy parking lot with various rusted pick up trucks, of the kind that belongs in the back yard of American country dives. I can't remember how the whole thing ended, but it was extremely exciting. I should have sat down to note all the details of that magnificent dream.
Seriously now, I think Del Potro has a very nice game.