This week's tournaments in Montreal and Toronto see the likely contenders in New York go head-to-head for the first time since Wimbledon, although the women's event is weakened by the absence through injury of Victoria Azarenka and Maria Sharapova.
That leaves Serena Williams as an even bigger favourite than she would have been otherwise, while Marion Bartoli is back in action a month after her stunning Wimbledon triumph.
The main questions revolve around the men's event and how the top players will fare as they begin their hard-court campaigns.
There is no Roger Federer, the Swiss ruled out by his troublesome back, and he will desperately hope he is fit for next week's tournament in Cincinnati.
Federer is the defending champion there and faces sliding further down the rankings from his current unfamiliar position of fifth if he cannot turn around his poor form.
Novak Djokovic, Andy Murray and Rafael Nadal are in action, though, and close attention will be paid to the performances of all three.
Murray, of course, will play his first matches as Wimbledon champion, and Montreal is no place to ease yourself back in.
Djokovic and Nadal may be on the other side of the draw but the likes of Grigor Dimitrov, Ernests Gulbis and Fabio Fognini are tricky early-round opponents, and Juan Martin Del Potro, David Ferrer and Tomas Berdych are also in his half.
Murray looks serious about doing well here, though. He took a full two weeks off following Wimbledon but was then back on court in Miami and has coach Ivan Lendl with him in Canada.
The Scot has prioritised the grand slams over the past few years and not always focused fully at the Masters events, which is largely why he is still so far away from Djokovic's number one ranking.
But with US Open and Wimbledon titles under his belt, consistency is the new watchword for Murray.
He told reporters in Montreal: "That's something the last few years I haven't been good at. I've always looked ahead to the slams and sometimes not played my best tennis in the Masters series, which wasn't the case at the beginning of my career. I want to try and do well here."
Djokovic has been Mr Consistency over the past couple of years, although there have been a few shock defeats this season.
Losing the Wimbledon final was undoubtedly a major blow, but it would be a surprise if he did not respond in the right manner at a tournament he has won the last two years.
Knowing what to expect from Nadal is more difficult.
The Spaniard is playing only his second hard-court tournament in nearly a year and a half.
He won the other one quite brilliantly in Indian Wells in March, in many ways the high point of his run of six titles and two final defeats in his first eight tournaments back after injury.
But the ninth tournament saw a first-round loss to Steve Darcis at Wimbledon and more days of speculation about the state of Nadal's dodgy knee.
Coach Toni Nadal insisted the knee was not a factor in the loss and that his nephew was aiming to begin the hard-court season in Canada, and lo and behold here he is.
Hopefully what Nadal needed - but did not get before Wimbledon - was rest, and having had ample time off since Wimbledon he is now fit and ready to be a real presence in North America.
Assessing his chances, Nadal said: "I didn't play a tennis tournament for the last seven weeks so that's not the perfect preparation for one of the most difficult tournaments in the world, where the best players are. But I'm going to try my best, as I do in every tournament."