A tearful Garbine Muguruza hit out at the French Open crowd after her title defence ended with defeat by Kristina Mladenovic.
Muguruza, who defeated Serena Williams in the final 12 months ago, walked off court wagging her finger at the fans on Court Suzanne Lenglen.
Mladenovic is the great French hope to end their 17-year wait for a home singles champion, and the support was understandably one-sided as they cheered the 24-year-old to a 6-1 3-6 6-3 victory.
But Muguruza felt it went too far, saying: "I think the audience was really tough today.
"I can't really understand. I don't know how to explain. If you had been in my shoes, I think you would have understood."
It appeared there was no love lost between the players either, with Muguruza asked about Mladenovic's habit of shouting 'forza' in Italian at key moments.
"I think she speaks like 25 languages, I heard," responded Muguruza sarcastically.
Caroline Wozniacki moved into the last eight with victory over Svetlana Kuznetsova, 6-1 4-6 6-2.
Wozniacki is that rare beast: a twice year-end world No.1 tennis player who has never won a grand slam. There have been others but none who reigned so long at at the top - 67 weeks - without success on the grand slam stage.
The Dane beat Kuznetsova 6-1 4-6 6-2, a player with two grand slam titles in the bag but who has never scaled the women's rankings to the very top.