No worries. It's better to peak for the MS'
Exactly . I saw his matches. After a short break he was obviously a little bit rusty but no worries .
Against Sock he was so unlucky because of the scheduling. Sock had a day off, Richard had a tough 3 setter vs Muller.
As Scmom wrote, he was expected tired.
Although he should have won this match it was his hands. At the end of the second set the two df was killing, he lost his focus, there were lot of bad calles, etc. so everything went wrong.
Hopefully he isn't injured, he touched his back at the end of the third set, maybe this explains the serving problems.
But all in all, he played sometimes brilliant,
needed more matches, for a well prepared US Open.
Go Richard !