Lleyton Hewitt has revealed that a virus, rather than ongoing back issues, has led to Nick Kyrgios' quarantining from his Davis Cup teammates, while declaring both the "under the weather" Kyrgios and late-arriving Bernard Tomic should be fit to play against the US on Friday.
Hewitt said Kyrgios would probably join the rest of the Australian squad on Wednesday morning, having earlier been confirmed as a no-show at the team dinner that night.
"He's just had a bit of a virus, so at the moment he's just taking it easy and just trying to get over that 100 per cent and then he'll be right to go," Hewitt said. "Obviously I didn't want him around the other boys right at the moment if he's a bit infectious as well. It's kind of precautionary more than anything, He'll be ready to go.
"The back and hip don't seem to be a problem, which is really good news, but he did have a virus over in Dubai and sort of just trying to get over that, more than anything. He's played a lot of matches, for he and Bernie they're confident coming in with their ball-striking, and it's about these guys just doing the small things to feel comfortable on the grasscourt, but come match day I'm backing both of those boys."
In the absence of his singles partner, the encouraging news was that Tomic practised on the match court with Hewitt during the heat of the afternoon and showed no ill-effects from either the fatigue of a 9am arrival from Mexico or the wrist injury that required pain-killers during last week's run to the Acapulco Open final.
"It was tough because I finished the final and I think I had to fly (out) five six hours after that, and it was busy with the flights, couldn't get connections, so it was very tough to get here," Tomic said.
"I'm happy I'm here and the hit today it was good to get on the court and it's now on grass so I have to try and get ready as much as I can today, tomorrow, the next day, which I think I'll be ready."
The wrist had been bothering him since his Australian open loss to Andy Murray, Tomic said. "I just had some sort of pain. But it's OK. I mean, I've been playing matches, I haven't pulled out anywhere, I 'm pretty confident, it's just maybe a few matches where I felt pain ast week but I pushed through it and was on painkillers.
The last four five days has been OK. I had to strap it on the final when I played and it didn't bother me to much, but I'm just happy I got here now on time because it was a tough tough schedule to get from Mexico to here in Melbourne. it was like all over the world, so I'm happy I'm here.
"It's tough to say if I will be 100 per cent, but there's not gonna be a lot of rallies if we play. It's gonna be a lot of quick points, and I'm serving really good and playing very confidently. "I'm very happy the way I'm playing and I think I'll be very ready for sure on Friday."
Earlier, US captain Jim Courier said he had limited "intel" on the health of both Kyrgios and Australian singles No.1 Bernard Tomic, who has a wrist injury, but was working on the assumption that both would be fit to play.
"The only thing that we've heard from the ITF is that Nick is not going to be here for press today and not going to be at the dinner. That's the only news that we have as far as that goes," Courier said, flanked by team members John Isner, Jack Sock and the Bryan brothers.
"But until Thursday in these things you can't really count on anything. You can change two players off the team, so we'll find out Thursday at the draw who we have, but ... we have to prepare for what's been presented to us.
"We're not blind. The practice courts are right next to each other, we can see what they're doing, they can see what we're doing, we know who's practising on their side and who hasn't been practising, but a lot can change in these things come Thursday and we'll really hunker down at that point."
Courier also said he was pleased with the custom-built grass court laid over Kooyong's regulation Plexicushion. "I haven't hit a ball on it yet, so it plays great for me," he quipped. "The centre court's different than the practice courts; it's a little slower, I would say. It's pretty firm, though. It's a pretty good court for a temporary grasscourt."