It was a natural reaction: not even he thought he'd end up number one ahead of Novak Djokovic, Roger Federer and Rafael Nadal.
"Once you get out there, I don't feel like I'm coming in trying to defend something. But not right now".
Murray sparked concerns he might have to withdraw from Wimbledon after cancelling two scheduled exhibition matches this week due to his sore hip.
"I've had hip problems since I was very young, so it's not something new to me", Murray told reporters. "But each day I've felt better, a little bit like at the French Open", he said. "It's just been very sore the past few weeks".
"It was giving me quite a lot of trouble moving to certain shots and getting into certain positions".
"That was why I had to take the break to try to give it a chance to settle down, calm down a bit".
The 30-year-old world No. 1 - who was peppered with questions at a news conference about his health and the earlier announcement that he and his wife are expecting their second child - said he has spent more time with his physio to help loosen up the hip area and that it has felt better the past few days.
"If I feel like I am today, I'd be delighted and have no issues getting through".
But on Sunday he dismissed fears he may have to pull out, saying: "I'll be fine to play the event and play seven matches".
She said: "In a team sport it's the club that organises everything but when your child plays an individual sport the onus is on the parents to organise things".
"If necessary, I can take some antiinflammatories if my hip flares up".
He added: "You can't worry about what other players are doing".
I think you realise that a little bit more as you start to get older.
"I wanted the kids I coached and my sons playing tennis all year round so I booked school halls and the polished wooden floors weren't the best surface to play on. But I don't know obviously what's going to happen", said the three-time Grand Slam champion.