Roger Federer has played only four tournaments so far in 2016.
Lionel Messi, Roger Federer, Neymar and Tiger Woods also on list.
Federer gave Wawrinka the nickname during the Australian Open in 2014.
Federer last missed a slam at the US Open in 1999.
Federer takes on Zverev in the second round of Rome Masters 2016. Find out where to watch live in the UK.
Roger Federer has played just three events this season owing to multiple injuries.
Becker is the coach of current world number one Novak Djokovic.
Federer takes on Tsonga in the quarter-final of the Monte Carlo Masters. Find out where to watch live in the UK.
The world number three has been out of action for the past few weeks with a virus that took a lot out of him.
Roger Federer returns to action for the first time since the Australian Open.
Del Potro shocked Roger Federer to win the US Open in 2009.
The world number one beat Kei Nishikori 6-3, 6-3 to seal a record 28th ATP World Tour Masters 1000 triumph.
Indian Wells billionaire owner Larry Ellison said he 'fully understands his decision.'
Tennis fails to cover itself in glory again but it is undeniable that the men's game dwarfs the women's.
Raymond Moore says there are lots of 'attractive' female players but later admits comments in 'poor taste'.
Daniel Koellerer was given a lifetime ban by ATP in 2011 for match-fixing.
The 34-year-old Swiss is set to miss the ABN AMRO World Tennis Tournament and Free Tennis Championships.
Djokovic sealed a 6-1 6-2 3-6 6-3 win at the Rod Laver Arena.
Roger Federer takes on Novak Djokovic in the semi-finals of the Australian Open, Find out where to watch live in the UK.
World number one improved on his sloppy win over Gilles Simon to prevail 6-3, 6-2, 6-4 in Melbourne.
The 17-time grand slam champion was in great form on Rod Laver Arena in Melbourne.
Roger Federer takes on Tomas Berdych in the quarterfinals of the Australian Open.