French veteran will miss Roland Garros for first time since 2018.
Gunter Bresnik coached US Open champion for 18 years.
Uncle Toni has one primary concern for his nephew's title defense.
The Austrian had some fun making the media rounds (virtually, of course) in New York on Monday.
Roland Garros champion shares thoughts on US Open final.
The Serb is tied for second on the all-time list for weeks spent atop the ATP's rankings.
Russia's Rublev continues to close in on the Top 10.