There is nothing more annoying for a tennis player than when a mobile phone goes off during a match.
However, you can have no real complaints when it is YOUR OWN phone that disrupts the action.
French tennis star Alize Cornet was left red-faced when her mobile phone went off in her bag during her match against world number one Caroline Wozniacki at the WTA event in Bastad, Sweden.
What's more the incident happened while Cornet was defending a match point.
Both players laughed about the incident with good grace, perhaps an easy thing for Wozniacki to do as she was in control of the match.
Wozniacki went on to win the contest 6-4 6-4 but she wasn't smiling after her second round match as she had to pull out of her clash with Sofia Arvidsson due to a shoulder injury despite winning the first set.
Watch a video of the incident below