British No.3 Kyle Edmund has admitted it is impossible to predict whether he will be fully fit for Great Britain's Davis Cup quarterfinal against France.
Edmund injured his shoulder during his first-round defeat to Alexandr Dolgopolov at Wimbledon and now faces a race to be fit for the Queen's Club clash, that starts on July 17.
Indeed the 20-year-old was forced to pull out of the recent Aegon Championships at the same venue with an abdominal issue but insisted he took the court on Tuesday feeling injury free.
"I don't know," Edmund said when asked if he would be fit to face France. "I'd love to predict the future, but I don't know.
"We'll see. With these sort of things, it's a day by day thing. Same as with the ab. Progressing is slow.
"I'll keep an eye on it and my trainer will work on it, but, as I say, you get niggles here and there. It's nothing new for me.
"I've always picked up something now and again. It generally doesn't last that long. We'll just maintain it and keep an eye on it.
"But Davis Cup is two, two and a half weeks away now. A lot can happen, can change, from now to there."
There had been suggestions that Edmund was set for a prominent role in the quarterfinal against France. However, he refused to get too down about his injury or defeat, accepting the Ukrainian was the better player on the day.
He added: "At the end of the day, Alexandr was better than me. He played well. I wasn't able to quite find enough points to beat him, basically."
Meanwhile, British No.7 Brydan Klein said he felt the support of the Wimbledon crowd as he fell to Italian Andreas Seppi 6-3, 6-2, 6-2.
Australia-born Klein, who switched allegiance to Britain in 2013, conceded though that he was unable to give them much to cheer about during his straight sets defeat.
He said: "I felt the crowd wanting to get going. I was a break down in the second, and I played a good point to save break point, and the crowd was starting, going.
"If I held that game, I feel they were really going to try and lift me the next game to break back.
"But I didn't really give them a chance to get going, and usually I like to get the pump going, and usually when I play I get very pumped up. He sort of suppressed me and the crowd"