The No. 4-seeded Fritz, the last American man in the bracket, moved into the quarterfinals with a 6-4, 6-3, 6-3 victory Sunday against No. 21 Tomas Machac of the Czech Republic.
After Djokovic finished off that opening set against Struff, he was visited by a trainer for treatment during the ensuing changeover. Djokovic was given a massage to his neck and shoulder.
If he was still in discomfort, his play wasn’t really affected at all. During the break after that set, Djokovic had his right forearm massaged. But again, there were no signs of trouble when the ball was in play.
Djokovic had trainers work on him earlier in the tournament, too, including for blisters on a foot in the first round and for a lower-back issue in the third.
He’s won four championships in New York, most recently in 2023.
