so who is this David Haye guy exactly ??
Andy Murray will need all the inspiration he can glean from his new unofficial mentor David Haye when he faces tennis's ultimate test in the semi-finals of the Monte Carlo Open.
Murray will do so armed with more motivational messages from Haye, who the 23-year-old Scot says has helped him emerge from the slump he went into after the Australian Open.
'Tennis and boxing are very similar sports and it's a sport I've got a lot of respect for,' he said. 'I've watched a lot of his fights and he's a great person to have on your side.