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.
The grass court swing got underway last weekend with two very popular minor tournaments in London and Halle. Federer, Nadal, Murray, Raonic, Berdych and Wawrinka were all in action as all of the players ramped up their preparations for Wimbledon.
Here are the biggest winners and losers from the first week of grass court play in 2014:
Andy Murray and Stanislas Wawrinka have recently joined the elite group of men who have won a Grand Slam title, Murray's US Open victory in 2012 coming after a streak that saw Rafael Nadal, Roger Federer and Novak Djokovic win 29 of 30 major titles.
In this article I analyse the players looking to be the next to add their names to the illustrious list: