Safin, Roddick and Hewitt. They had bad luck that their prime coincided approximately with that of Federer (well maybe not Hewitt). They might have picked up a lot of slams between 2003 and 2007 or even later, possibly at least 3-4 each. On the other hand, Murray, Djoko and DelPo may actually be quite lucky if Federer loses interest in the next year or so (hypothetically) and Nadal turns out to have a career-ending injury. And besides, Federer's prime wasn't that long really (about 3 years 2004-2006), maybe, we'll see at US. So is this an injustice? And how can it be corrected?