Tennis has produced several players who continued their good run even in supposed retirement age. However, among the names of repute such as Roger Federer, Rafael Nadal, Novak Djokovic and Serena, the one name that gets lost is John Isner’s. The towering American jointly holds the record for the longest tennis match ever played with Nicolas Mahut of France. The two played an 11-hour-5-minute marathon at Wimbledon in 2010. Isner is a self-confessed late bloomer, whose best year in the sport came in 2018 when he broke into the singles top 10 rankings aged 33. He would foreshadow this during an earlier interview with Tennishead, saying, “I’ve always improved as I’ve gotten older. I’m 26, which isn’t exactly young, but I feel like my best tennis is still ahead of me.”