It's safe to say we take for granted how tough it is to win week after week (just ask Janko Tipsarevic). But it also puts into perspective the dominance of the big three.
Andy Murray hogged the big four spotlight this past weekend, but it was a couple of surprise titlists who validated the tours' unpredictability.
Janko Tipsarevic and his Serbian mates are a weekend's work away from hoisting the Davis Cup trophy, but they'd better not hold their breath. As Novak Djokovic can attest, it's a terrible strategy.