The most spectacular part? It was the on-a-full-sprint, drop-shot-retrieving, flick-from-a-few-inches-off-the-ground, forehand-around-the-net-post, jaw-dropping victor that Federer conjured up a few games from the conclusion of the 6-4, 6-1, 7-5 tour de force in the third round Saturday.
When Kyriagos placed a drop shot, it nearly looked impossible for Federer who was close to his baseline.
Coach or not, Kyrgios admits he could learn from Federer.
Look at the reaction Kyrgios, 'it's like mate you can't be serious!' It was just sensational.' In press conference, Federer revealed the keys to his win: 'Being super consistent, make him hit that one extra ball because when you play like this, it can also work against you.
The 37-year-old Swiss somehow reached a drop-shot from Kyrgios to flick it past the incredulous Australian on his way to a three-set win in the US Open third round. Federer ran cross court to pull off an incredible shot by the side of the net which left everyone's jaw dropped.
"On clay, I think it's one of the biggest challenges in sports to beat this guy or to compete with this guy", Thiem said. "But that's just how he plays".
Kyrgios is a big talent, but tends to only turn up on occasion, and he never really seemed like a serious threat to Federer this time around.
"We're two very different characters. I think I can do a lot more".
"The way he behaves on court, his demeanour".
Down 4-6, 0-3 against Pierre-Hugues Herbert, Nick Kyrgios got an alleged "pep talk" from chair umpire Mohamed Lahyani. I don't want to change myself too much, but I could definitely take way things he does in certain situations.
- Dominika Cibulkova, who measures up at 5ft 3ins (1.60m), has found a soulmate in tennis's land of the giants in men's player Diego Schwartzman who is just 5ft 7ins (1.70m).
Federer showed no signs of his advancing years to produce a spectacular moment which left nearly everyone inside Arthur Ashe Stadium on their feet in amazement and caused a stir on social media.
Serena Williams' yells of "Come on!" were crescendoing right along with the tension in a fourth-round US Open match that began as a rout and suddenly became riveting.
While he keeps on keeping on, there are all sorts of seeds tumbling from both singles draws.
Djokovic, victor of US Open titles in 2011 and 2015, extended his dominance over Richard Gasquet with a 6-2, 6-3, 6-3 victory in front of a rowdy night crowd on the massive Ashe Stadium.
Zverev, the 21-year-old sensation who has lifted titles in Munich, Madrid and Washington this year and reached finals in Miami and Rome fell, 6-7 (1/7), 6-4, 6-1, 6-3 to veteran compatriot Philippe Kohlschreiber.
Both last-eight showings at the majors came when he was a teenager.
Djokovic could meet Federer in the quarterfinals.
Federer's emphatic victory set up a last-16 meeting with another Australian, unseeded journeyman John Millman, on Monday for a place in the quarter-finals.
'As I said, it's all mental with me, I think. "At the same time I will try to maintain the level of focus and performance and level of tennis that I've had today".
Federer now faces John Millman in the fourth round.
Saturday's blockbuster was billed as the match of the first week.
But Courier has sensationally claimed the forehand victor isn't that hard to pull off. She then faced a break point, but Kanepi wasted that chance by sending a backhand wide. "He loosened up straightaway after that".
We admit: We also didn't know you could shoot the ball around the net. All the pressure was off him. "Sure", Federer said, pausing to smile, "it's unusual for it to happen to you with your own serve". "When he gets in front, there's not much you can do".
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