Murray, who had to cancel two exhibition matches and a couple of practice sessions last week because of a hip problem, sweated his way through another three hour work-out on Sunday.
However, the 30-year-old Briton said he was hopeful of being a force to be reckoned with at his home Grand Slam for years to come. This year he has a single match under his belt in preparation to the most important two weeks of any season of Murray's. It's just been very sore the last few weeks and was giving me quite a lot of trouble, moving to certain shots and getting to certain positions.
Murray has been in noticeably good spirits despite his injury worries and it was revealed yesterday he has an extra reason to be happy with wife Kim expecting their second child.
"That was why I had to take the break to try to give it a chance to settle down, calm down a bit".
"We found out a while ago, but I'm not interested in discussing the dates of that in here", Murray said after being asked when he found out the news.
4 train cars derail in Washington; minor injuries reported
The West Pierce Fire and Rescue department said the first four cars of the 15-car northbound train derailed. Service usually runs between Vancouver, Canada, and Eugene-Springfield, Oregon, according to local reports.
Andy and Kim are the parents of a 17-month-old daughter named Sophia.
"I haven't been in this sort of position too often, like only a few days before a Grand Slam, and not felt good at all".
Sir Andy Murray is an extreme perspective tennis player, for him, it will be rather hard to build a schedule now.
In both his previous Wimbledon wins he'd won at Queen's in preparation, indeed when he won at the All England Club for the first time, it was his 18th straight victory on grass.
Murray said knowing he is due to become a father again would have no bearing on his performance. "I just had a light practice this morning to see how I feel and I'll practise again later".
He would not be drawn on when the baby was due, but said his wife would be supporting him at Wimbledon over the next fortnight.
"I was so down after losing in qualifying, I never cry after matches but I was sobbing", he said.