By Piers Newbery
BBC Sport at Wimbledon
Andy Murray said he did not feel pressure at being the only Briton left in the singles at Wimbledon but insisted he will lose his next match.
The 18-year-old Scot beat 14th seed Radek Stepanek in the second round and faces former finalist David Nalbandian in the third round.
"I'll lose my next match," said Murray, who made the same claim ahead of facing Stepanek.
"Nalbandian is top 10 in the world, he's been to a Wimbledon final."
He added: "I've won two matches at Wimbledon, two matches at Queen's, and I'm only 18. I've got no experience playing in these matches and it's going to be very difficult for me. I'm not expecting to win my next match."
Murray revealed after beating Stepanek that he had not been feeling well during the second set.
"I was sick when I woke up," he said. "I had a bad head and a sore throat, and started to feel a little bit tired towards the end of the second."
And he repeated his post-match comment that the Czech had behaved badly by trying to put him off in the closing stages.
"I wasn't even listening to him at the end," said Murray. "I don't like him. I just said 'bad luck' to him."
The Scot's victory came soon after British number one Tim Henman surprisingly lost to Dmitry Tursunov.
"I really wanted to win because it wouldn't be so good for the supporters if there was nobody left," admitted Murray.
And the difference in on-court attitude between Murray and Henman was not lost on the teenager.
"I show a lot of passion on the court and I think a lot of the fans like that, whereas Tim and Greg are more relaxed than me on the court," said Murray.
"I think maybe it's better for the fans (to show passion) and I'm not going to change the way I am."
And despite Murray's evident self-assurance, he conceded that mingling with the likes of Roger Federer and Lleyton Hewitt in the locker room does not come naturally yet.
"I feel a little bit embarrassed, it doesn't quite feel right being around those guys yet," he said.
"I've spoken to a few of them and they're all really nice guys, I just don't feel like I belong being around them yet. I'm still not inside the top 200 yet."