As Daniil Medvedev sat courtside trying to re-hydrate during a changeover, an image of nine-time Australian Open champion Novak Djokovic flashed up in the stadium behind him.
It was in the third set Saturday, and it was like the absent No. 1 was looking over the shoulder of the player who is effectively the No. 1 seed at the year's first Grand Slam tournament.
Medvedev, who lost last year's Australian Open final to Djokovic but avenged that with a victory over the Serb for the US Open title, reached the fourth round for the fourth straight year at Melbourne Park with a 6-4, 6-4, 6-2 win over Botic van de Zandschulp.
The 25-year-old Russian was a conspicuous fan favourite on Margaret Court Arena, too, two days after being unsettled by the boos and jeers of a parochial crowd on Rod Laver Arena when he ended the run of mercurial Aussie Nick Kyrgios.
Medvedev later clarified he didn't have a problem with the Australian crowds and had been fully expecting to have them against him when he played Kyrgios, just not while he was in his service motion.
Medvedev avoided a showdown with Djokovic after the world's top-ranked player had his visa cancelled and was deported on the eve of the tournament for failing to meet Australia's strict Covid-19 vaccination criteria.
He also avoided another match against an Australian in the fourth round when wildcard entry Chris O'Connell lost to Maxime Cressy 6-2, 6-7 (6), 6-3, 6-2.
Cressy's win means there's two 24-year-old Americans who will be in the fourth round of a major for their first time.
No. 70-ranked Cressy is in his fourth Grand Slam tournament. No. 20-ranked Taylor Fritz finally made it in his 22nd attempt, with a 6-0, 3-6, 3-6, 6-4, 6-3 win over No. 15 Roberto Bautista Agut. Fritz will next play fourth-seeded Stefanos Tsitsipas, a runner-up at the French Open and semifinalist in Australia last year, who fended off Benoit Paire 6-3, 7-5, 6-7 (2), 6-4.
No. 9 Felix Auger-Aliassime progressed with a 6-4, 6-1, 6-1 win over No. 24 Dan Evans, winning 14 of the last 16 games.
On the women's side, two-time Grand Slam champion Simona Halep is into Week 2 at Melbourne Park for the fifth consecutive year after a 6-2, 6-1 victory over Danka Kovinic.
She will be joined by second-seeded Aryna Sabalenka, who advanced with a 4-6, 6-3, 6-1 win over No. 31 Marketa Vondrousova. Her next match is against No. 115-ranked Kaia Kanepi, who has reached the quarterfinals six times at Grand Slam events, but only once since 2013 and never in Australia.
In other third-round matches, 27th-seeded Danielle Collins of the US rallied from a set and a break down to beat 19-year-old Clara Tauson 4-6, 6-4, 7-5. She will next meet No. 19 Elise Mertens, who advanced 6-2, 6-2 over Zhang Shuai. No. 7 Iga Swaitek, the 2020 French Open champion, beat No. 25 Daria Kasatkina 6-2, 6-3.
None of the other players remaining the women's draw has won as many tour-level titles as Halep's 23.
Halep's next opponent will be Alize Cornet, who celebrated her 32nd birthday with a 4-6, 6-4, 6-2 victory over No. 29 Tamara Zidansek, a 2021 French Open semifinalist.
Cornet followed up her upset of No. 3 Garbie Muguruza by reaching the fourth round at the Australian Open for the first time since 2009.