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The Disney Lullaby 10.30pm. the Billie Jean King National Tennis Centre on day six of the US Open.

It is just after 10.30pm and there are two matches still on court.

We have eyes on them both via various devices.

We have Taylor Fritz locked in another grind with the Swiss player Jerome Kim over on Armstrong

and we have Taylor Townsend and M Andrava just about to get underway on the Arthur

Ash Stadium because their match was scheduled to follow what inevitably turned into a bit

of an ordeal between Cameron Norrie and his horse lungs and 38-year-old Novak Djokovic.

And that is where we should start, I think.

Djokovic defeating Norrie in Fawcett, 6467, 6263,

taking a medical timeout for treatment on a back injury along the way,

comfortably winning down the straight.

David, how much trouble was Jokovic in tonight really?

In the end, not much, I don't think. It was a little bit of a concern when he had a twinge to his

back and he had a medical timeout. It was a bit arcy between Norrie and him at that point,

because Norrie was seen to be asking the umpire how many times is he allowed to have a

trainer out, and Jokovic definitely seemed to shoot him a glance as if to say, stay out of it,

mate. Anyway, they've had a few things happen in the past. But I think the really interesting thing is, and Djokovic, I think, it warmed up, he loosened up.

A lot of the time these players, they get a twinge and they get worried.

And then they realize, oh, it's okay, I'm okay.

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