Rafael Nadal has a fight on his hands to retain a spot just behind Novak Djokovic in the rankings, Naomi Osaka’s second-week performance at slams defies historical precedent, and Coco Gauff is no standard-issue qualifier at this week’s Adelaide International.

Djokovic brushes aside Daniil Medvedev with a performance for the ages, Roger Federer should get comfortable with the idea of a lower place on the all-time slam list, and a flurry of younger prospects have excelled this week at Challengers around the world.

The 23-year-old Japanese star continues her dominance in the biggest matches, Rajeev Ram and Barbora Krejcikova are the king and queen of Melbourne doubles, and Daniil Medvedev enters tomorrow’s final with scary numbers.

The fast-rising Russian extends his array of win streaks, Sabalenka and Mertens win a farewell title, and Naomi Osaka looks ahead to yet another match against a player ranked outside of the top ten.

Osaka continues to be the only active player with Serena’s number, Jennifer Brady advances to her first major final by the narrowest of margins, and Novak Djokovic is back in his happy place.

Rafael Nadal suffers a rare five-set defeat, Daniil Medvedev continues to beat the best in the game, and the 22nd and 25th seeds set up an unlikely women’s semi-final.

The men’s top seed continues to battle through injury with an impressive display of serving, Serena Williams moves one match closer to her 24th slam, and no one is asking Aslan Karatsev the tough questions.

The men’s fourth round concludes with two drubbings and two injuries, Karolina Muchova keeps on winning the close ones, and Bianca Andreescu leads the field in a de facto resuscitation of the grand slam consolation draw.

Iga Swiatek’s grand slam set streak ends, Aslan Karatsev goes from qualifier to quarterfinalist, and Hsieh Su Wei sets a new standard for what a 35-year-old doubles specialist is capable of.

Rafa records another in a long line of victories against his fellow southpaws, Jessica Pegula takes another big step forward, and the Australian Open starts a five-day spell without fans