Alexis Sanchez and Mesut Ozil have struggled to impress in the big games for Arsenal this season, which has been against Liverpool, Chelsea and Manchester City.
The 36-year-old has won seven titles this year, including the Australian Open and a record eighth Wimbledon title to overtake Sampras' seven championship wins.
Federer won the Australian Open and Wimbledon in 2017 to extend his record to 19 Grand Slam titles.
Nadal has won four titles in the calendar year so far, including a 10th French Open title.
Three matches at the recently concluded Wimbledon tournament have aroused suspicions of match-fixing.
Nadal comes into Wimbledon having won his 10th French Open title.
Federer also responds to whether he's the greatest tennis player of all time.
Wawrinka suffered defeat to Federer and Nadal in the Australian Open and French Open respectively.
Rafael Nadal has taken a three-week break after the French Open and will return to action at Wimbledon.
Andy Murray is hoping to make the most of his last few years with Wimbledon approaching.
Mats Wilander believes Rafael Nadal's French Open win has restarted his campaign.
After Roland Garros, reigning French Open champion leads Swiss by almost 3,000 points in the Race to London.
Nadal and Federer have won a combined seven titles this season including two Grand Slams.
Djokovic most recently crashed out in the French Open quarter-final.
Nadal won his 10th French Open title at Roland Garros in 13 visits.
Paul Annacone, who also worked with Pete Sampras, will join Swiss' coaching team for grass-court swing.
Spaniard won his 10th French Open crowd by beating Stanislas Wawrinka.
Wawrinka was outclassed by Nadal, losing the final in straight sets.
Mallorcan secures a historic 10th title at Roland Garros courtesy of dominant straight-sets win.
Nadal is looking to achieve La Decima — winning the French Open for a record 10th time.
20-year-old Latvian produces a brilliant fightback to stun pre-tournament favourite at Roland Garros.
Spaniard remains on course to achieve 'La Decima' after comfortable straight sets win at Roland Garros.