Federer displayed his trademark silky movement and said the knee had held up during a two-hour 24 minute duel.
Russian qualifier Daniil Medvedev stunned home favourite Kei Nishikori in Tokyo on Sunday, winning the final of the Japan Open 6-2, 6-4 in just over one hour.
World number one Novak Djokovic produced a majestic display in a 7-5, 6-3 victory over American John Isner on Thursday to extend his winning streak in Asia.
Djokovic first played Monfils at the US Open in 2005 but Tuesday's match was only their second encounter on clay and he needed only one break point to clinch the first set.
Millman, ranked 80 places above world number 14 Pouille, needed 73 minutes to clinch a 6-3, 6-4 victory and the best win of his career by ranking position.
World number one Novak Djokovic extended his winning run in Asia when he strolled into the last-16 of the Shanghai Masters.
De Minaur, 20, went the entire tournament without facing a break point, and the Australian fittingly clinched victory with a deft serve-and-volley backhand winner.
Roger Federer called for 'concrete' facts while Novak Djokovic spoke of his team once being offered $200,000 to fix a match as the multiple grand slam champions reacted to claims of widespread match-rigging in tennis on Monday.
IMAGES from Day 7 of the US Open on Sunday
Britain's Kyle Edmund reached the quarter-finals of a Grand Slam for the first time after coming from a set down to oust Italian Andreas Seppi 6-7(4), 7-5, 6-2, 6-3 in the fourth round of the Australian Open on Sunday.
Pummelling the ball with such force that it appeared distorted into an oval shape at times, the nine-times French Open champion was able to toy with his opponent until ready to finish him off.
Former world number one Novak Djokovic showed signs of a return to form with an impressive 7-5, 6-4 victory over Japan's Kei Nishikori in the opening round of the Madrid Open on Monday.
Images from Day 2 of the French Open in Paris on Monday.
Home favourite Kei Nishikori defeated Frenchman Richard Gasquet 7-6(2), 6-1 in the semi-finals of the Japan Open on Saturday, setting up a final against Russian qualifier Daniil Medvedev.
Roger Federer was made to work hard by Fernando Verdasco before beating the Spanish veteran 6-3, 3-6, 6-3 on Wednesday to reach the quarter-finals of the Dubai Duty Free Tennis Championships.
Roger Federer began his latest quest for a 100th ATP title with a battling 6-4, 3-6, 6-1 win over Philipp Kohlschreiber in the first round of the Dubai Duty Free Tennis Championships on Monday.
Novak Djokovic extended his unbeaten start to the season to 15 matches as he swatted aside German veteran Philipp Kohlschreiber 6-3 6-1 with ease on Wednesday to reach the Dubai Tennis Championships quarter-finals.
Top seed and defending champion Roger Federer battled past in-form Russian Daniil Medvedev 6-4, 4-6, 6-4 to reach the last-16 at the Shanghai Masters on Wednesday.
Rafael Nadal and Novak Djokovic won their matches for their respective countries on Day 4 of the ATP Cup on Monday.
Serena faces hard-hitting Giorgi in first round while former World No Hewitt play his final grand slam
Images from Day 2 of the 2022 Australian Open in Melbourne on Tuesday.
Summary of sports events and persons who made news on Thursday
Images from Day 1 of the Wimbledon tennis championships in London, on Monday.
Images from Day 1 of the 2022 US Open at the USTA Billie Jean King National Tennis Center, in Flushing Meadows, New York, on Monday.
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.
Relief was at hand, however, with a cool change blowing over the city and the temperature expected to fall back below 30 by the evening.
With rain having washed out Wednesday's play, Federer along with champion Rafael Nadal and top seed Novak Djokovic all face playing back-to-back matches on Thursday if they want to reach the quarter-finals.
Nadal needed all his experience to keep Pouille at bay in the decider and the match looked to be heading for another tiebreak before he pounced to break Pouille's serve for the first time to go 6-5 up in the third.
A tenacious Roberto Bautista Agut battled back to beat world number one Novak Djokovic 1-6, 7-5, 6-3 and advance to the quarter-finals of the Miami Open on Tuesday as the Spaniard claimed his second win over the Serb this year.
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.
Rohan Bopanna teamed up with Canada's Denis Shapovalov to enter the quarter-finals of the Rotterdam Open
Serena Williams and Naomi Osaka advanced to the Rogers Cup quarter-finals on Thursday to set up their first meeting since the American's infamous row with an umpire overshadowed last year's US Open final.
Rafael Nadal extended his astonishing winning run on clay to 42 consecutive sets as he reached the semi-finals of the Barcelona Open with a 6-0, 7-5 victory over Slovakia's Martin Klizan on Friday. The defending champion will face David Goffin on Saturday after the Belgian beat Spaniard Roberto Bautista 6-7(3), 6-2, 6-2.
Eugenie Bouchard's mid-season nosedive continued on Tuesday as the Canadian was swept aside 6-3 6-4 by Croatian qualifier Donna Vekic despite having home advantage and the backing of an excited crowd in a first round clash at the Rogers Cup.
IMAGES from Day 5 of the Wimbledon Championships at All England Lawn Tennis and Croquet Club on Friday.
The seventh-seeded Bulgarian advanced to his eighth ATP World Tour Masters 1000 quarter-final with a 6-3, 7-5 victory over Del Potro, who struggled with the intense heat in the closing stages of the one hour, 39 minute match.
Images from Day 5 of the Wimbledon tennis championships played in London, on Friday.
Images from Day 4 of the Australian Open in Melbourne on Thursday
Images from Day 4 of the French Open matches played at Roland Garros in Paris on Wednesday
Images from Day 5 of the 2021 French Open, in Paris, on Thursday.