Climate change is increasingly reshaping the world of sport, affecting not only how games are played but also whether they can be played safely at all. Rising global temperatures, more frequent heatwaves and unpredictable weather patterns are placing athletes, officials and support staff at greater risk. A clear and recent example of this came during the opening day of the 2026 Australian Open, when a ball girl collapsed on court in near 30-degree heat, highlighting the growing tension between elite sport and a warming planet.
During Turkey’s Zeynep Sonmez’s first-round match, the young ball girl fainted beside the umpire’s chair and had to be assisted off court. Sonmez prioritised the girl’s wellbeing over the match, later stating it was more important to be “a good human being than a good tennis player”. While temperatures were recorded at 28°C at the time, forecasts suggest Melbourne could reach 35°C or higher later in the tournament, with previous Australian Opens played in conditions exceeding 40°C. This incident shows that extreme heat does not only affect athletes, but also the wider workforce that makes sport possible.
Tennis is far from alone. Around the world, outdoor sports are becoming increasingly difficult to stage.
Tennis authorities have attempted to respond. Tennis Australia updated its Extreme Heat Policy in 2019, introducing a Heat Stress Scale designed to monitor dangerous conditions. However, the ball girl collapsed when the scale was only at 2.8 out of 5, a level that simply advises increased hydration. This raises serious questions about whether current safety measures are sufficient in an era of rising global temperatures, and whether sport’s governing bodies are reacting quickly enough to climate science.
Tennis is far from alone. Around the world, outdoor sports are becoming increasingly difficult to stage. Football matches in southern Europe and the Middle East are now frequently played at night to avoid extreme daytime heat. At the 2022 World Cup in Qatar, the tournament was moved to winter for the first time in history due to dangerously high summer temperatures. According to climate research, heat-related illness risk for footballers could double by 2050 if global warming continues at its current rate.
Endurance sports are particularly vulnerable. Marathon events have already been cancelled or shortened due to heatwaves, with medical experts warning that prolonged exertion in temperatures above 30°C significantly increases the risk of heat stroke. The International Olympic Committee has acknowledged that by 2080, only a small number of current Summer Olympic host cities will have a climate suitable for safe competition.
Cricket is another sport under threat. In countries such as Australia, India and Pakistan, rising temperatures combined with longer playing days have led to increased dehydration, fatigue and injury risk. A 2021 study found that cricket players in Australia could face up to 20 additional days per year of “unplayable” heat conditions by mid-century.
The Australian Open ball girl’s collapse is therefore more than an isolated incident; it is a warning. Climate change is forcing sport to adapt, but adaptation has limits. Without stronger action on global emissions and more robust safety policies, some sports may become almost impossible to play in certain regions. Human stories like this remind us that behind the spectacle of elite sport are real people whose health is increasingly on the line as the planet warms.
