El Dude said:
Can someone clarify, are the "year-end rankings" after the WTF or after the Davis Cup? I'm fairly certain they aren't Dec 31.
The technically correct answer for your question is neither, as correctly explained by herios.
But, the short answer is after the Davis Cup is over as the challengers and futures do not
affect the big boys. But, even there very rarely does DC alter the top 10 rankings.
Hyptohetically speaking, if Roger had won the WTF, Roger would have been ranked #2 at
the end of WTF, but it would not be his year end ranking as Murray would have overtaken
him by earning his 275 points at DC (as Roger's lead would have been less than that).