Play at the Australian Open has been suspended due to extreme heat, with temperatures soaring near 40°C in Melbourne. Defending champion Jannik Sinner faced significant challenges, including cramps, but managed to defeat Eliot Spizzirri in a tense match that included a controversial stoppage for heat policy enforcement. Meanwhile, players like Madison Keys and Jessica Pegula continue to push forward in the tournament, adapting to the harsh conditions. The event organizers have adjusted the match schedule to accommodate the soaring temperatures, prompting discussions around the heat rules applicable to both the Australian Open and other Grand Slam tournaments.