'It's OK to not be OK': what top athletes have said about mental health in sport

Professional athletes are said to be seeking mental health help in record numbers. More than ever before sportspeople have been speaking out on their struggles to cope with the pressure that comes with competing at an elite level. Here's what Serena Williams, Clarke Carlisle, Kevin Love, Kelly Holmes, Michael Phelps and many others have said about mental wellbeing over the years.