Wilting in high heat and humidity, Eugenie Bouchard became the latest top woman to lose at the US Open, ending her streak of making the semifinals at each Grand Slam tournament this year.
The No. 7-seeded Bouchard, the runner-up at Wimbledon in July, needed a medical timeout and was beaten 7-6 (2), 6-4 Monday (Tuesday NZ time) by 17th-seeded Ekaterina Makarova of Russia.
In muggy air and with temperature in the high 80s (above 30 Celsius), a trainer checked Bouchard's blood pressure and rubbed plastic bags of ice on her shoulders, arms and legs during the changeover after the second set's fifth game.
When action resumed, Bouchard got broken right away to trail 4-2. She broke Makarova and pulled even, but got broken at love in the final game to end it.