John McEnroe took issue with his BBC co-commentator Simon Reed during Jack Draper's commanding first-round Wimbledon performance against Sebastian Baez on Court 1.
The American tennis legend intervened when Reed suggested the British number one's dominant display resembled a practice session.
The exchange occurred as Draper, seeded fourth at the Championships, established a commanding 5-1 lead in the opening set with a double break advantage.
Reed's observation about the one-sided nature of the match prompted an immediate response from McEnroe, who defended the prestige of the tournament and its showcase courts.
John McEnroe quickly responded to claims that Jack Draper's match was just practice
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After Draper hit a thunderous forehand winner to move close to securing the first set, Reed commented: "It's 5-1, a double break and you get that type of opportunity.
"This is like practice. Proper practice."
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McEnroe quickly interjected: "I don't think the All England Club will be too happy with you saying this first round match on Court 1 is practice."
The amusing exchange between the BBC personnel concluded with Reed attempting to clarify his remarks, saying: "You know what I mean."
The All England Club takes particular pride in selecting the most compelling matches for Centre Court and Court 1, making McEnroe's defence of the tournament's standards particularly pointed.
Draper's performance fully justified his placement on one of Wimbledon's premier courts.
The 23-year-old British player wrapped up the opening set in just 28 minutes, demonstrating why tournament organisers had selected him for such a prominent stage.
His opponent, Argentina's Sebastian Baez, ranked 38th in the world, has never progressed beyond the second round at SW19.
The gulf in class was evident as Draper delivered the kind of statement victory expected from a fourth seed.
The scheduling decision reflected Draper's rising status in British tennis, with his dominant display vindicating the All England Club's faith in showcasing him on Court 1.
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Jack Draper has been tipped as a genuine contender this year at WimbledonPAMcEnroe's defence of the match's significance aligns with his high regard for Draper's potential.
Speaking at the French Open last month, the seven-time Grand Slam champion predicted a bright future for the young Briton.
"I'll be surprised if he doesn't win multiple majors. It is incredible how much he's improving and how great a player he's become," McEnroe said.
The American praised Draper's maturity and development, noting how the 23-year-old had won admirers through his performances and conduct.
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