In an era dominated by four men, major upsets in tennis have been fairly hard to come by in recent years. While there are signs that this is beginning to change, one man who used to be as likely a source as any of a "Big Four" casualty is fading from the minds of those who like a good shake-up. Jo-Wilfried Tsonga has slipped down the rankings since retiring in the second round of Wimbledon last year, and has also failed to beat a player ranked above him since his 2013 Roland Garros win over Roger Federer.
At one point on quarter final day, with Rafael Nadal already out at the hands of 19 year old Nick Kyrgios, Andy Murray had just been dumped out in straight sets by Grigor Dimitrov, and both Novak Djokovic and Roger Federer trailed by a set in their respective matches. While the latter pair eventually overcame their opponents, the message is clear at this year's Championships: change is coming at the top of mens' tennis, and tomorrow we will found out just how soon.