WTA takes 'full responsibility' after Pegula calling Andreeva 'diva' aired

The Women's Tennis Association says it takes "full responsibility" for not telling players there were microphones on practice courts after private comments Jessica Pegula made to her coach about fellow player Mirra Andreeva were live-streamed.

The session at Indian Wells, California, was streamed by the WTA before its Tour Finals start on Sunday.

In a private conversation with her coach Mark Knowles, world number five Pegula described Andreeva as "a diva".

The American could also be heard saying the French Open champion "needs to be humbled" and her coach Conchita Martinez encourages her behaviour.

Pegula's agent, Chris McCormack, said she had been "completely unaware" the conversation could be heard by courtside microphones, "let alone live-streamed to the public".