On the women’s side, there is Margaret Court, Evonne Goolagong, Billie Jean King, Chris Evert, Martina Navratilova, Steffi Graf and Serena Williams. Between them, it is a list of tennis legends and all-time greats – but a select group, too. They are the only players in the Open era to win the French Open and Wimbledon in the same summer.

The Roland Garros-Wimbledon double, or the Channel Slam, as it is sometimes known, is notoriously difficult to accomplish. The switch from clay to grass after the French Open and the transition between different surfaces while being successful on both is one that only the most accomplished players have mastered, especially for those who go deep into the tournament in Paris. It may not be not be as hard as it used to be, given there are now three weeks between the grand slams rather than two, as well as the changing nature of grass and how it plays, but it’s still among the toughest tests in the sport.

To win the French Open and Wimbledon back-to-back requires a great champion, capable of not only remarkable levels of mental and physical recovery following the clay season but with the drive and determination to set new targets once arriving onto the grass. It explains why, since the turn of the century, only Williams, Nadal, Djokovic and Federer have succeeded. But with Djokovic a major doubt for Wimbledon after undergoing knee surgery and Nadal choosing to prioritise the Olympics, that era is fast coming to a close.

Swiatek and Alcaraz though displayed further signs during their triumphant French Open campaigns that they have the capacity to to carry the game forward and challenge for such records. After saving match point in her second-round thriller against Naomi Osaka, Swiatek cruised to a third consecutive French Open title and fourth in five years. A day later, Alcaraz battled from behind to defeat Alexander Zverev in five sets, winning the French Open for the first time and adding Roland Garros to his US Open and Wimbledon titles.

For the 21-year-old Alcaraz, the transition from grass to clay is one he managed seamlessly throughout his Wimbledon run last year, having arrived at Queen’s Club in late June without ever winning a title on grass before flourishing on the surface. It was his victory in SW19 that confirmed Alcaraz as the most complete champion the sport had produced since its big three, as his historic victory in Paris proved: the Spaniard is the youngest player in tennis history to win grand slam titles on all three surfaces. He is comfortably the most rounded, all-court player tennis has produced since Djokovic, Nadal and Federer.

Naturally, this makes Alcaraz an immediate candidate for the Roland Garros-Wimbledon double, and the new world No 2 will be considered the favourite as defending champion especially if Djokovic, the seven-time winner, is unable to compete from July 1. Being the favourite would be a new experience but, in coming from behind to beat both the new world No 1 Jannik Sinner in the semi-finals and Zverev in the final, Alcaraz not only showed but embraced the mental fortitude and resilience to “suffer”. It is an ability that is required to defend a grand slam title, and when going deep into consecutive slams as well.

Swiatek, meanwhile, will return to Wimbledon with a different approach. While her dominance on clay and hard courts is obvious – the world No 1 has now elevated herself above her peers with a fifth grand slam title at the age of just 23 – Swiatek still considers herself to be a learner on grass, although she showed marked improvement in SW19 last year and flashes of the potential to turn into a grass-court great. But as Alcaraz showed last year, entering a tournament with nothing to lose and everything to win can be dangerous for the rest of the field. Swiatek has played a demanding schedule over the clay-court season, more so than Alcaraz, but every grand slam title will fuel the belief that she can contend at Wimbledon.

“We’ll see what the plans are,” Swiatek said following her French Open final victory over Jasmine Paolini. “I don’t expect a lot: the balls are different, overall tennis is different on grass. I’ll just see and I’ll work hard to play better there. Last year’s result was pretty nice. I feel like every year it’s easier for me to adapt to grass. It’s a huge challenge. If I lost here earlier, maybe I would be able to play two more weeks on grass and then be a better grass player, but if I would choose, I love playing on clay, so I’m not going to give that up ever.”

Tennis does not stop, especially at this time of the year. The grass-court season begins just one day after the French Open final. Swiatek and Alcaraz may make their returns following the Roland Garros celebrations in London and Berlin respectively the following week, allowing seven days to adapt and transition from the red clay to the green lawns. It can be a jarring contrast for many, especially those who go all the way in Paris. But as a new era dawns, Alcaraz and Swiatek may arrive in Wimbledon as favourites regardless.