"Inside a 90-minute Ajax match rewatch: How tennis doping controllers operate"

Tennis Players' Late-Night Doping Test Ordeals

During a playful phase of his youth, a 21-year-old Gaël Monfils once returned home after a late night out at 5:45 a.m. and dozed off shortly after. Moments later, a doping control officer arrived at his door. "I was half-dead in bed, barely awake, and suddenly I hear someone knocking," Monfils recalled with amusement.

Elite tennis players must provide their whereabouts for one hour daily under anti-doping rules, allowing authorities to conduct surprise tests. Most athletes, including Monfils, choose 6 a.m. as their designated time, ensuring they are at home or in their hotel.

That morning, Monfils took an unconventional approach. "I told him, 'No way I can pee right now. But since you need to stay with me, come inside.' I set up a chair for him. 'Sorry, I need to sleep—no idea when I’ll wake up, but you can keep an eye on me. It’s not that I’m refusing. I’ve been out all night and just went—I can’t do it now.'"

His nap lasted longer than expected. "I woke up at 3 p.m., and the guy was still there on his phone. 'Hey, man,' I said. Finally, I peed. He waited **ten hours**—he could’ve taken everything in my place!"

Beyond matches, training, and travel, tennis players must comply with strict anti-doping regulations. Once selected, athletes must provide a sample under supervision, regardless of how long it takes.

If a doping control officer arrives outside the scheduled hour, players must return immediately. Czech teenager Jakub Menšík once had to leave his high school graduation for a test, taking three hours to produce a sample. Taylor Fritz, after a long flight to Shanghai, was stopped in his hotel lobby. "The guy stayed in my room while I napped in 10-minute bursts because of jet lag. I kept waking up trying—and failing—to pee."

Officials must watch closely as athletes provide samples, adding another layer to the already demanding routine of professional tennis.