Walton, who had battled superbly to get through the qualifiers at the prestigious Masters 1000 event in Florida, was handed the biggest match of his burgeoning career when he was paired with former teen prodigy Felix Auger-Aliassime in Thursday's first round.
The 24-year-old from Brisbane, who's enjoying a breakthrough year to get to No.150 in the world, gave the one-time world No.6 a terrific battle in the opening set, and, when 5-4 up, even worked himself into the position of earning three set points to draw first blood.
Allez Felix 😮�💨— ATP Tour (@atptour) @felixtennis | @MiamiOpen | #MiamiOpen pic.twitter.com/mS2XB2nArrMarch 21, 2024
But after he missed one golden opportunity to clinch the set, spraying what should have been a straightforward forehand winner horribly wide into the tramlines, it marked the beginning of the end for Walton's sprightly challenge.
Canadian Auger-Aliassime, who's had some struggles with injuries and form and has dipped to No.36 in the world, went on to hold serve and immediately break the deflated Queenslander's delivery in the next game before serving out to take the set 7-5.
Another solitary break in the second set after Walton had battled hard to get to 4-4 was then enough for two-time grand slam quarter-finalist Auger-Aliassime, with his superior firepower and experience, to seal the 7-5 6-4 win after exactly two hours.Â
The Canadian victor was impressed with the Aussie, who'd been playing just his third tour-level match.
"I wasn't doing anything too bad in the first set, I thought he was just playing really well, serving to his targets, playing high percentage - he was making me work," Auger-Aliassime shrugged.Â
Despite the loss, his run at Miami Gardens will see Walton enjoy a career-best ranking next week - provisionally, he's moved to 136 - in a season when he's already won one Challenger tournament in Burnie, been in the final of two others and earned his first wins over top-100 opponents.
Friday saw the return of the popular Japanese Kei Nishikori, a former Miami finalist who's battling to reignite his injury-beset career at 34 after being out of action since last July, but there was to be no fairytale comeback as he was beaten 6-3 6-4 by Austria's Sebastian Ofner.Â