Zverev sweats out another 5-set scare at US Open

Alexander Zverev's grueling 4 1/2 hour win over Quentin Halys has sent shockwaves through the US Open, with the top seed becoming the first man in the Open Era to navigate back-to-back five-set matches to start a major. For coaches, this match serves as a prime example of the physical and mental toll that a grueling schedule can take on even the world's best players. Zverev's ability to persevere and adapt in high-pressure situations will undoubtedly be a valuable learning experience for his own coaching team.

As the tournament progresses, coaches will be keeping a close eye on Zverev's fitness levels and how he manages his energy reserves in the face of increasingly stiff competition. With a reputation for struggling with consistency, Zverev's capacity to grind out victories like this one will be crucial if he's to make a deep run in the tournament. Meanwhile, Halys' impressive display will not go unnoticed, as he pushed the world's top player to the limit and demonstrated the kind of resilience and tactical acumen that can make a dark horse contender a force to be reckoned with.

What's next to watch is how Zverev's body holds up against the next opponent, and whether he can maintain his level of play while also conserving energy for the long haul. Coaches will also be studying Halys' game, looking for insights into how to exploit Zverev's vulnerabilities and whether his own strategy can be effective against other top seeds. As the US Open heats up, one thing is certain: the margins between victory and defeat are razor-thin, and it's the coaches who can make all the difference in helping their players find that extra edge.

Originally reported by espn.com. CoachNews adds analysis for sports & fitness readers.