# Tennis: Emma Raducanu had her blood pressure and other vitals checked before retiring from her Wuhan Open first-round match with dizziness when she was down 6-1, 4-1 to American Ann Li. The British world number 30 appeared to be struggling with the conditions as temperatures soared to 30 degrees Celsius, forcing tournament organisers to apply the heat rule in the first two days of competition. The heat rule allows players to take a 10-minute break between the second and third sets, and means the tournament can be played under a partially or fully closed roof.
Tennis: Raducanu retires at Wuhan Open due to extreme heat