Jannik Sinner's chances of winning the Qatar Open might have just taken a hit after his first practice session. Despite his status as the world number two, Sinner's performance in the heat could be a significant challenge. The Italian has a history of struggling in hot conditions, which could impact his chances of success in Qatar, where temperatures are expected to reach nearly 35°C. This is a stark contrast to the Australian Open, where he faced similar conditions and struggled against Eliot Spizzirri in the third round. The heat index played a crucial role in that match, and the roof was closed to protect players from the intense heat. Sinner's performance in the heat has been a concern, especially at the Shanghai Masters, where he retired against Tallon Griekspoor. If the heat continues to rise, it could level the playing field for the rest of the ATP Tour players. However, Sinner remains confident, stating that the heat is not as extreme as in Australia or other dry places. He also mentions that the temperature can vary at night, which could be a factor in his performance. The Italian will face a potential banana skin tie against Tomas Machac in the first round of the Qatar Open, and he will also be in the same section of the draw as Alexander Bublik, Jakub Mensik, Jiri Lehecka, and Arthur Fils. The tournament will be a challenging one for Sinner, but his confidence and experience could help him overcome the heat and make a strong showing.