Five-set matches are physically punishing, occasionally absurd and increasingly under threat. They also produce much of what makes grand slam tennis great

Tuesday night’s quarter-final match between Ben Shelton and Carlos Alcaraz had everything a US Open spectacle could ask for: huge stakes, knife-edge drama, top-shelf competition and an American hero who comes through in the end. The only fault to find was really the matter of time. The first ball wasn’t struck until 11.05 in the evening, and Shelton’s clinching ace didn’t come until 3.33 in the morning – marking, after a total of 4hr 28min on court, the latest-ending US Open match by a whopping 43 minutes.

Somewhat predictably, the discourse among media and fans following the late-night match has swiftly moved on from the USTA’s misadventures in scheduling to a referendum on the five-set match and whether it should be put out to pasture. For the record: that would be a colossal unforced error.

Teo Davidov doesn’t hit backhands. He serves from both sides. The 16-year-old from Denver is treating the tennis world to a wildly unorthodox style – and proving it’s more than a parlor trick

Teo Davidov always has the upper hands. An amiable junior prodigy from Denver, the 16-year-old was the oddest sight at this year’s US Open, the only player in the tournament – man, woman or junior – who hits only forehands. To be clear: it’s not that he doesn’t have a backhand or can’t hit a backhand. He’s ambidextrous and so he doesn’t bother with them.

It’s nothing personal. “To be honest, I like the traditional backhand-forehand,” he says. “I like the classiness of it. I like hitting backhands myself just to play around, just for fun.” He hits those from both wings, too.

The 23-year-old’s epic win over Carlos Alcaraz means there is a real chance of an American man winning the US Open for the first time since 2003

In yet another graveyard shift at the US Open, Ben Shelton showed he can hang around late, ousting defending champion Carlos Alcaraz in five sets in a quarter-final that started on Tuesday night and finished on Wednesday morning. When Shelton fired the final ball out wide for his seventh ace of the night, the clock on the Arthur Ashe Stadium court read 3.33am. It was the latest-ever finish at the Open and the fifth-latest finish in grand slam history.

After embracing Alcaraz at the net, he pumped his fists and greeted his coach’s box with a primal scream. Parents have a name for this: the zoomies. Then Shelton looked to the stands and gestured at his mother and his girlfriend, soccer star Trinity Rodman. In his on-court interview, he asked that his sister, Emma, be given the day off. She had spent the entire night and much of the early morning watching her little brother play.