Djokovic and Agassi are deep thinkers about the sport and McEnroe said that their partnership, however long it lasts, can be a meeting of minds
Osaka survives test to reach last 16
Saturday's match between Djokovic and Nadal will be the 50th between the two great rivals, who have won a combined 26 Grand Slam titles.
Nothing that has happened in the past 12 months suggests Roger Federer's hunger is diminished with victory at this year's Australian Open taking his Grand Slam title haul to 20.
Wimbledon champion Garbine Muguruza suffered a 6-2, 6-4 defeat at the hands of unseeded Czech Barbora Strycova in the second round of the Nature Valley Classic in Birmingham on Thursday.
World number one Novak Djokovic was sensationally disqualified in the US Open fourth round on Sunday after striking a line judge with a ball following a point during the first set of his match against Spain's Pablo Carreno Busta.
Djokovic, who has ruled like no other on Rod Laver Arena simply had no answer as Chung, nine years his junior, wore him into the ground to win.
Summary of sports events and persons who made news on Sunday
World number one Simona Halep swatted aside American Nicole Gibbs while Maria Sharapova was flawless in her straight sets victory over Romania's Mihaela Buzarnescu in the opening round of the Shenzhen Open on Monday.
The Danish World No 3 ended 2017 with the biggest title of her career in Singapore and returned a day after thrashing Madison Brengle in her season opener to hit 21 winners against eight unforced errors in the 53-minute win over Martic.
Roger Federer made a comfortable start to his quest for a 100th title, despatching Fabio Fognini in straight sets to ease into the quarter-finals at the Paris Masters on Thursday.
Men's tennis steps into the unknown next week when the young guns expected to follow in the footsteps of the current golden generation contest the inaugural Next Gen ATP Finals in Milan.
The trick-shots, underarm serves and tirades at spectators are all part of the theatre, and the 'what will he do next?' lure puts bums on seats, in much the same way John Daly still draws a crowd in golf.
Serbian Djokovic, 31, needed elbow surgery in February to cure a problem that surfaced in 2017, but after some jarring defeats he returned to the kind of domination he achieved in 2015, winning Wimbledon and the US Open.
'Everyone always talks about how hot Melbourne is but the US Open's way worse'
The fifth-seeded Austrian, who saved two match points, will face Novak Djokovic on Saturday after the world number one's opponent Marin Cilic withdrew with food poisoning.
Daniil Medvedev and Karen Khachanov crushed second seed Dominic Thiem and third seed Alexander Zverev respectively to set up an all-Russian semi-final at the Rogers Cup in Montreal on Friday.
Big-serving Isner reaches Montreal second round
Top seed Roger Federer will challenge for a ninth Halle Open title after reaching the Wimbledon warm-up event final with a 6-4 7-6(5) victory over rising Russian talent Karen Khachanov on Saturday.
Tennis fans expressed frustration that the players weren't getting better crowds.
A summary of Saturday's action at the US Open.
Italian Bracciali banned for life, Starace for 10 years
Raucous home support for holders Argentina did not make up for the absence of Juan Martin del Potro and Federico Delbonis on Friday as they fell 2-0 behind to Italy in the first round of the Davis Cup.
The last 10 Slams have all been won by Djokovic, Federer or Nadal. Will this Wimbledon be different, asks Dhruv Munjal.
Having dug in early on to stay with Federer, Nishikori ended up running away with the match to inflict a first straight sets defeat in the ATP Finals round-robin stages on the 20-time Grand Slam champion.
Photos from the tennis matches played at Indian Wells on Tuesday
For good reason a two-week Grand Slam can be described as a 'last man standing' marathon of mental and physical endurance, which makes Roger Federer's haul of 19 all the more incredible.
The 22-year-old, 6ft 6in Russian, already the owner of two indoor hard court titles this year, moved one step away from the biggest title of his career at the Bercy indoor arena, crushing his Austrian friend in 70 one-sided minutes.
Caroline Wozniacki overcame a mid-match wobble and withstood a barrage of big hitting to get her WTA Finals title defence back on track with a 7-5, 3-6, 6-2 victory over Petra Kvitova at the Singapore Indoor Stadium.
The future arrived late but after some old-fashioned glitches, two Russian trailblazers fired the first shots in what could be a revolution in tennis at the Next Gen ATP Finals on Tuesday.
Rafael Nadal gave a much improved performance to advance into the quarter-finals of the Barcelona Open on Thursday, dispatching Spanish compatriot and crowd favourite David Ferrer 6-3, 6-3.
IMAGES from Day 6 at Wimbledon on Saturday.
Unseeded Novak Djokovic was given some trouble by Jeremy Chardy in the opening set but prevailed 7-6(5), 6-4 to take his record over the Frenchman to 11-0 and 26-0 in sets.
Roger Federer suffered a shock 3-6, 6-3, 7-6(4) defeat to Australian wildcard Thanasi Kokkinakis on Saturday that will cost the Swiss his world number one ranking and leaves the Miami men's tournament wide open.
Top seeded Ash Barty overcame a slow start to defeat Maria Sharapova 6-4 6-1, while Simona Halep battled past Ekaterina Alexandrova 3-6 7-5 6-4 in the second round of the Cincinnati Masters on Wednesday.
French Open champion Rafael Nadal has pulled out of next week's Queen's Club grasscourt tournament, saying he needs more time to recover after winning his 11th Roland Garros title.
Rohan Bopanna teamed up with Canada's Denis Shapovalov to enter the quarter-finals of the Rotterdam Open
IMAGES from Day 3 of the US Open in New York on Wednesday.
The Indian qualifier, who savoured his best ever performance on the ATP World Tour, went down fighting 4-6, 6-4, 3-6 against the world number 45 from South Africa in the quarter-finals played on Friday.
After a brief interruption when the players were locked at 5-5 in the opening set, Federer saved two set points in the tiebreak and held firm to gain the upper hand in the contest.