Maroon 5 star denies slating ex-girlfriend

Maroon 5 star Adam Levine has denied slating his ex-girlfriend Maria Sharapova for her lack of ability in the bedroom.

A report in Russian magazine Exile claimed that Levine had compared the tennis player to a "dead frog" and complained that he was "disappointed" by the way she treated him.

However, a representative for the singer has insisted that he did not make the comments, adding that the story is "absolutely not true".

Levine and Sharapova dated for a brief period of time in 2005.