Dealing with injuries, Serena Williams played only one Major quarter-final in 2021. It came at the beginning of the season in Melbourne, when Serena earned another Major record. Williams reached her first Major quarter-final at the US Open 1999 just before turning 18, heading all the way to lift the first Major title.Over two decades later, the American was still among the world’s best players at the beginning of 2021, proudly owning 23 Major trophies and giving her best to secure the elusive 24th. Seeking the first Major title in four years, Serena advanced into her 13th Australian Open quarter-final. Thus, Williams earned another Major milestone, joining Chris Evert on 54 Major quarter-finals and leaving Martina Navratilova on 53. Serena lost only one set in the opening four …