I find it hard to pick his best HC performance this year. IW was a shocker, of course, just for coming from left-field. In Canada, he was fantastically aggressive, and beat Djoker, which makes that one tempting. Cincy, however, was one that no one saw him ever getting, so that was a total bonus! USO trumps all for being a Slam, and a win over Djokovic in a final. But for his highest level on HCs this year, overall, I'll say Canada.