Fallen Australian tennis star Nick Kyrgios has entered a treatment program after accepting a one-month ban for testing positive to cocaine.

After admitting his “huge mistake” when initially suspended for failing a drugs test on June 22 at an ATP 250 tournament in Spain, Kyrgios is allowed to compete again from Friday.

Kyrgios, who had been provisionally suspended since August 4, had faced a ban ranging from a baseline three-month period to up to four years.

The 2022 Wimbledon finalist also forefeited the €6570 ($10,600) he won in Mallorca for losing in the first round to countryman Adam Walton.

But his suspension was reduced for agreeing to enter a treatment program.

The International Tennis Integrity Agency said the 2022 Wimbledon finalist, whose career world ranking peaked at No.13, could appeal against the provisional suspension but he opted against doing so.

“I recently failed a drug test in Mallorca after testing positive for cocaine,” Kyrgios posted on Instagram last month.

“I made a huge mistake and I take full responsibility for it.

“I’m sorry to my fans, my family, my sponsors and everyone close to me. Above all, I’m sorry to the kids who follow me. I know the example this sets and I’m deeply disappointed in myself.”

Kyrgios, who played only four official singles matches on the elite ATP Tour this year, has battled knee and wrist injuries in recent years and has all but conceded he is finished as a singles force.

“I’m not going to make excuses, but I do want to give some context about where I’ve been,” he wrote.

“The last couple of years of injuries have taken a huge toll on me, both physically and mentally.

“My body hasn’t been able to do what my mind expects it to do, and coming to terms with being near the end of my career has been harder than I ever imagined.”

But the polarising Canberra-born drawcard said that didn’t excuse his actions.

“I’ve always said I didn’t choose tennis – tennis chose me,” he wrote.

“But letting go of something that has been my whole life is one of the hardest things I’ve ever had to face. At times I’ve felt helpless and alone.

“None of that excuses what I did.”

Kyrgios said “the good news is that this has given me a wake-up call.

“For the next 28 days, I’ll be stepping away from social media and public life while I focus on getting myself right,” he said.

“I’d ask that people respect my privacy during that time, and most importantly the privacy of my family.

“I’m sorry. I’ll do the work and come back better.”

The ITIA said Kyrgios was suspensed for a ‌positive test for benzoylecgonine, a cocaine metabolite, with a World Anti-Doping Agency laboratory confirming the positive result on July 17.

The 31-year-old was banned from playing, coaching or attending any tournaments sanctioned by the men’s and women’s tennis tours worldwide and national-level events in Australia.

Kyrgios last played in the men’s doubles at Wimbledon in London on July 2, when he and partner Alexander Bublik lost in the first round.

De Minaur out of US Open in shocker

Alex de Minaur is presenting a brave face after blowing his best opportunity yet to claim a maiden grand slam crown after crashing out in the US Open second round in New York.

Australia’s world No.7 slumped to a shock straight-sets loss to Botic van de Zandschulp, a Dutchman he’d beaten in all four of their previous meetings.

In a demoralising display, de Minaur dropped serve five times and only broke his 70th-ranked opponent once in a 6-4 7-5 6-2 defeat on Thursday (Friday AEST).

He also racked up 30 unforced errors compared to just 23 winners in the two-hour, 43-minute upset on The Grandstand.

“My level today wasn’t good enough. It’s pretty straightforward,” de Minaur said.

“I gave myself every chance by being competitive, having a good mindset, a good attitude, but it was just one of those days where just the feeling of the ball on the strings wasn’t there.

“I was making a lot of errors, which is not really my normal game style. I can’t really explain the reasoning of it, but just it felt like the more I tried, the more intensity, the more fired up I was getting, I just kept on making unforced errors.

“When those sort of things happen and the odd chance that you have, he comes out with some good tennis – it’s just a recipe for a tough day at the office.”

A three-times US Open quarter-finalist, including on his past two visits to Flushing Meadows, de Minaur had been the fourth-highest-ranked player left in the draw following the exits of Novak Djokovic and Felix Auger-Aliassime.

De Minaur’s surprise departure incredibly leaves little-known wildcard Dane Sweeny as Australia’s last player standing at the season’s final grand slam event.

The world No.123 plays 21st seed Luciano Darderi on Saturday (Sunday AEST) for a most improbable spot in the last 16 after taking out Darderi’s 14th-ranked compatriot Lorenzo Musetti 3-6 6-1 6-2 6-2 in a huge second-round boilover.

-AAP