It’s hard to imagine that a final four that consists of the Nos. 2, 3, 4, and 6 seeds would be considered a surprise, but that’s the state of the men’s semifinals at the 2012 United States Open. It’s the first time in 33 Grand Slam events in which neither Roger Federer nor Rafael Nadal reached the semifinal round, though the cast of remaining characters is hardly an obscure one.
