Federer looked a little tight early on, but he showed characteristic patience, even when he struggled to get the booming serve back into play.
The five-time US Open champion erased four break points at 2-2 in the opening set—an unreturnable serve, a pair of Kyrgios backhand errors and a forehand winner down the line—in an 18-point game that featured five deuces. Kyrgios never crafted another break point in the remainder of the match.
Federer earned his first break point after 34 minutes, with Kyrgios serving at 4-5. And while the Australian fought that one off with an inside-out forehand down the line, he was unable to save the second one; Federer threading the needle with a sliced backhand return down the line on a 95-mph second serve.
Kyrgios dropped just five points on his serve in that set—four in one terrible game—and that was more than enough of an opening for Federer to seize the advantage and never look back.
Federer broke much earlier on the second set, painting the baseline with a deep return and forcing Kyrgios to hit his forehand into the net. He earned a double break in the fourth game behind two perfect passing shots, one from each doubles alley, and an ill-advised Kyrgios drop shot hit from halfway between the baseline and service line that barely reached the net.
It wasn’t like there was an apparent lack of effort, something Kyrgios has been chastised for in the past, just that Federer turned in the type of vintage, unwavering performance that saw him lift the title in Flushing Meadows every year from 2004-08.