Roger Federer weathered an early storm from Nick Kyrgios before teaching the young Australian a lesson as he glided into the last-16 at the US Open.
The Swiss maestro was put under severe early pressure by the 23-year-old but once Kyrgios failed to convert a break when 0-40 on the Federer serve, it was all downhill.
Kyrgios cries of I need to hire a coach midway during a one-sided second set told a story in itself, and was a far cry from the cocksure attitude that he arrived onto court with.
The precociously talented world No. 30 had the cheek to imitate the Federer serve in the early exchanges of the match – a serve which was, in fairness, unreturned – but he would do well to copy the professional manner that faced him across the net in future.
Whether Federer saw Kyrgios imitation of his service motion is unclear, but he was in no mood for fun and games and he delivered a true masterclass to win 6-4 6-1 7-5 to set up a meeting with his opponents compatriot John Millman.
There werent too many rallies on display in the opening exchanges, with both serving well. Kyrgios, impressively, needed just 39 seconds to hold to love.
It was the Aussie who settled the better and he appeared focused on the task at hand, although he still found time to Federers serve.
After sweeping through his own service games, he upped the ante at 3-3 – creating four break point chances in a nine-minute service game before the Swiss eventually held.
Ever the ruthless competitor, Federer made Kyrgios pay for his missed opportunities. A well-placed backhand slice return flew past the advancing Aussie and he pinched the opener.
The setback saw a shift in the 30th seeds mindset. He began berating his box at the change of ends – suggesting the only comments they offered were telling him to get his first serve in – and he started engaging in an on-court monologue.
Federer wasted no time in capitalising on his opponents frustration and broke at the start of the second set on his way to a 3-0 lead.
There was no Mohamed Lahyani to step in and deliver a pep talk this time for the 23-year-old and he was broken again, which left him screaming out: I need to hire a coach! Federer soon wrapped up a two-love advantage.
Kyrgios regained his composure at the start of the third and at least looked after his serve early on and the Aussie began to find his swagger.
He looked on in amazement as Federer produced what may well end up being the shot of the tournament. The Swiss darted to a Kyrgios drop-shot and somehow guided it round the net post.
That prompted a shift in gear in terms of entertainment value, with the 23-year-old suddenly seemingly relishing his time on court and amid some flashy strokes and soft hands, he held to keep his nose in front.
Federer, though, remained focused on the task at hand and broke his opponent once more to secure a fine win.