Overview
- The tournament’s Heat Stress Scale reached level 5 at 3–1 in the third set, prompting a suspension and closure of the Rod Laver Arena roof before play resumed indoors.
- Organizers say the rule mandates suspension at the end of an even number of games or after a tie-break when the scale hits the maximum value.
- The Australian Open applies an algorithm that blends air temperature, radiant heat, humidity and wind speed to set responses ranging from cooling breaks to stoppages.
- Arena courts continued under closed roofs with cooling systems, while play on outside courts was halted until conditions improved, according to tournament reports.
- Eliot Spizzirri questioned the timing after breaking serve, whereas Jannik Sinner regrouped during the brief pause without receiving treatment and went on to win.