Defending champion Garbine Muguruza was unhappy with a "really tough" crowd after defeat by home favourite Kristina Mladenovic at the French Open.
The Spaniard, 23, lost 6-1 3-6 6-3 on a packed Suzanne Lenglen Court which gave its full backing to Mladenovic.
Seven-time Grand Slam winner Venus Williams' defeat by Swiss Timea Bacsinszky means a new major champion will be crowned in Paris on Saturday.
"It's a very painful defeat here in the French Open," said Muguruza.
"The crowd was really tough today. I can't really understand. I don't know how to explain.