Gilles Muller plays his final match 13 years after defeating Andy Roddick at the US Open.

Gilles Muller defeats Denis Shapovalov in straight sets at the Fever-Tree Championships on Monday.

Gilles Muller edges past Andreas Seppi on Thursday for a place in the Sofia quarter-finals.

Gilles Muller participates in a childrens' clinic at the Diema Xtra Sofia Open on Tuesday in Sofia.

Gilles Muller meets his match at the DIEMA XTRA Sofia Open players' party.

Viktor Troicki, Gilles Muller and Philippe Kohlschreiber attend the DIEMA XTRA Sofia Open players' party.

Gilles Muller's title defence in Sydney comes to an end with a loss to Benoit Paire in the quarter-finals.

Gilles Muller will try to defend his Sydney International title this week.

Gilles Muller continues to build on his career-best season in Atlanta.

Gilles Muller continues building on his career-best season by reaching the quarter-finals in Atlanta.

Gilles Muller with meteorologist Paul Goodloe from The Weather Channel in Atlanta.

Gilles Muller's Wimbledon ends at the hands of Marin Cilic in their five-set quarter-final on Wednesday.

Gilles Muller stops Rafael Nadal in five sets at Wimbledon.

It takes four hours and 47 minutes, but Gilles Muller finally prevails over Rafael Nadal in the Wimbledon fourth round.

Gilles Muller and Rafael Nadal were able to have a laugh before stepping onto Centre Court.

Gilles Muller is in top form against Rafael Nadal at Wimbledon.

Gilles Muller keeps adding more milestone moments to 2017 by reaching the second week at Wimbledon.

Gilles Muller, the No.16 seed, beats Aljaz Bedene 7-6(4), 7-5, 6-4 to reach the Wimbledon fourth round.

Gilles Muller fights through a five-set win over Lukas Rosol on Wednesday to reach the third round of Wimbledon.

Gilles Muller, the No.16 seed, tops Marton Fucsovics in straight sets to reach the second round at the All England Club.

Gilles Muller sees his unbeaten streak on grass this season end at the hands of Marin Cilic.

Gilles Muller hit 12 aces like Sam Querrey, but held his nerve on the big points to reach the Aegon Championships semi-finals on Friday.

Ross Hutchins (left), ATP Chief Player Officer, and Gilles Muller (far right) present Aegon Championships organisers with the ATP World Tour 500 Tournament of the Year award.

Gilles Muller saves all three break points to advance at The Queen's Club on Wednesday.

Gilles Muller celebrates a special Father's Day on Sunday by winning the Ricoh Open title with his two sons and other family in attendance.