Zverev backs best-of-five-sets format at Grand Slams, cites physical demands

German tennis star Alexander Zverev has defended the best-of-five-sets format used in Grand Slam tournaments, stating that players do not want to see the format reduced. Zverev, who won the French Open and US Open titles, argued that winning a Grand Slam requires exceptional physical endurance from competitors. The format remains a defining characteristic of tennis's most prestigious events.