Andy Murray has been forced to withdraw from the Miami Masters after suffering a groin injury.
The 33-year-old former world number one was due to take on South African star Lloyd Harris in the first round on Wednesday or Thursday.
He said the “freak” injury was not connected to his career-saving hip surgery, which has left him with a metal joint.
Murray told the Miami Herald: “I had no issues while training, felt fine, did some gym work Friday, no problem, and then I woke up about 3am, felt pain in the groin – not on the side I had my surgery – and when I got out of bed I struggled quite a bit to walk.
“I have no idea what I did. It’s one of those freak things. Each day it has gotten progressively better, but it’s not enough. I have not practised since Friday.
“I am really gutted. This is a place I have done so much training over the years. It’s like my second home. Last time I played here was 2016 and so much has happened.
“Last year, the day before I was supposed to travel here, Covid stopped the tennis tour. Miami’s been a place that has given me a lot, but this just wasn’t meant to be.”
His latest injury blow comes after he missed last week’s tournament in Dubai following the birth of his fourth child.
The three-time major winner is trying to rebuild his career following hip surgery which almost forced him to retire in 2019.