Hewitt was outfought by the sixth seed who moved into the semi-finals in 88 minutes.
The former world No.1 has pulled out of all five events he had entered this year.
Novak Djokovic claimed his sixth Australian Open title on Sunday as the 28-year-old continues to dominate men's tennis. Here are some of the key statistics for the all-conquering Serb.
Henman has taken on American Paul Annacone as his part-time coach after splitting with Larry Stefanki in September.
The World number ones were named top seeds for next week's U.S. Open.
The future of men's tennis looks appetising with a new brigade of potential Grand Slam winners.
The Swiss player has become the enigma of the tour, winning a succession of tournaments only to fail when it comes to the biggest stages.
I'd love to win Wimbledon and I think it's possible, says Roger Federer.
'It ranks right at the top. Under the circumstances, playing against Nadal, such an important match, it's amazing," the 31-year-old told reporters after needing barely two hours to extend his perfect record in seven Australian Open finals'
Novak Djokovic won a record-equalling 20th Grand Slam title by after winning this year's Wimbledon drawing level with long-time rivals Roger Federer and Rafael Nadal.
Former Wimbledon champion Richard Krajicek says the Swiss world No.1 is like the replacement for Pete Sampras. 'He has so much ability, it is a joy to see him play.'
With a crop of talented young players knocking on the door of the exclusive men's Grand Slam club, the 'Big Four' hegemony over the game's top tournaments may be coming to a close.
Wimbledon debutant Eubanks ends Tsitsipas's challenge in fourth round.
Factbox on Switzerland's Roger Federer, who defeated Rafael Nadal in the Australian Open men's singles final on Sunday.
"There have been moments for optimism - plenty. And on the men's side, not as much."
Frenchman Fabrice Santoro will feature in the Roger Federer-led Indian Aces in a dual role of player-cum-coach in the upcoming International Premier Tennis League (IPTL).
Federer may never glide across it as only he can, or any other Grand Slam court for that matter, again. But his legacy will never fade.
A win for Djokovic would move him past Pete Sampras (14) to outright third on the list of Grand Slam title winners.
The opening match in the Pete Sampras Group produced a feast of stylish backhands from both players but it was Dimitrov, the first Bulgarian to qualify for the tournament in its 48-year-old history, who overcome some late jitters to prevail.
Officials said he was one of a 'handful' of successful applicants among 26 people who sought exemptions.
Novak Djokovic ruthlessly took Matteo Berrettini apart at the ATP Finals on Sunday as he began his quest to reclaim the number one ranking by winning his opening group match 6-2, 6-1.
Federer, Nadal and Djokovic had made it near impossible for their peers to live, and thrive, amongst them. But the coming generation, which hasn't been as scarred by defeat at the hands of the Big 3, may make tennis unpredictable again.
In last year's quarter-finals at the All England Club, Federer saved three match points before edging out Cilic in five sets and the closeness of that match is comforting for the Croat.
Former world number two Tommy Haas officially announced his retirement from tennis at the BNP Paribas Open in Indian Wells on Thursday, ending a career that spanned more than two decades.
Here are some facts about Federer and his ranking.
Will Smith, who had once portrayed the irreverent Muhammad Ali with such aplomb, brings the character of Richard Williams alive. The accent, the dialect, the body-language and the ever-present chip on the shoulder, observes Deepti Patwardhan.
Nadal surpassed the haul of Roger Federer and Novak Djokovic.
World No 2 Andy Murray's three-point contribution to Britain's defeat of Belgium in the Davis Cup final concluded one of the most remarkable years ever achieved in the competition by an individual player. Below are the key facts:
Here is a Factbox on Spaniard Garbine Muguruza, who beat American Venus Williams 7-5, 6-0 to win her first Wimbledon singles title on Saturday:
Not that cash will be the motivator for world number one Novak Djokovic, Rafa Nadal, Dominic Thiem, Tsitsipas, Daniil Medvedev, Alexander Zverev and debutants Andrey Rublev and Diego Schwartzman when the tournament's 50th edition starts on Sunday.
A summary of Wednesday's action at the US Open.