Two-time Wimbledon winner Murray, 3 1, will be made to quit because of a hip injury.
The Scot will play at next week’s Australian Open but admitted it would possibly be the last championship of the livelihood.
“To see him this morning in tears in social room, it merely shows what it means to him” Barker told the BBC.
“It is the realisation that he is facing the fact that his career is coming to an end sooner instead of after.”
- Tennis legend Billie Jean King leads tributes to Murray
- Oh-so-nears, tears & triumphs – the way Murray helped produce gold interval for British sport
- The minute Murray understood the match was up
Three-time Grand Slam winner Murray, who’s also won two Olympic titles and turned into some sort of number one, made the statement in an emotional press conference in Melbourne on Friday.
He said he has been in”acute pain” as attempts to return to the sport after operation on his right hip a year before, and while he would like to play with Wimbledon the summer before childbirth , he admits he may possibly not be possible.
“Having seen the footage of Andy practice in Philadelphia, jumping over these obstacles in the gym, it looked as though he had been getting back to full fitnesscenter,” said Barker.
“I had been somewhat disappointed in the championship he played with in Brisbane, then I heard he just won two or three matches against Novak Djokovic and I felt it was all going downhill.”
- Murray’a winner on and off court’ – US legend King leads tributes
- ‘Scots look at Murray and are proud he’s just one of these’
- Andy Murray: A career in 10 pictures
‘I had been screaming for months’ – Barker on what’s to come for Murray
Barker, who won the French Open in 1978, knows firsthand the emotions Murray is atmosphere having retired from Tennis 1984 after enduring recurrent injuries throughout her career.
She said she had been”so, so sad” that Murray was being forced to get rid of his career in the same style, confessing she WIShes”each day” she still played.
“You want to take action all on your terms – not to be pressured because your body breaks down,” she said.
“I had to cease because of injury and I had been crying . I used to awaken each day and think’what am I getting out of bed for today?’ .
“everyday had been planned around Tennis, if it had been nutrition, training, playing, or traveling, it had been my passion.
“I loved my livelihood, so I know for Andy it’s is going to be catastrophic. That’s why he is really emotional about it suddenly some thing that has been a huge, huge part of your life was removed, and I am not sure how you replace this.
‘He’s an incredible athlete’
But just 12 months after, he ended the 77 years of harm because a British man had last won the Wimbledon singles title, eventually beating Novak Djokovic having let three championship points slip out of his grasp.
“How he dealt with all the tension, and it had been astounding pressure, to win back in 2013, I simply don’t know how he did this,” said Barker. “It was a moment we will all remember for ever.
“He’s certainly the greatest we have had. The manner in which he has won games, when he appears like he’s down, he manages to get a solution to win,” Barker said.
“He’s a fantastic competitor and he’s an incredible athlete”