Andy Murray says he will be out for "an extended period" following the ankle injury he sustained at the Miami Open.
The Briton, 36, received treatment following the incident late in the third set of his dramatic 5-7 7-5 7-6 (7-5) defeat by Tomas Machac on Sunday.
He confirmed he suffered a full rupture of his anterior talofibular ligament (ATFL) and near full-thickness rupture of his calcaneofibular ligament (CFL).
Murray will now see a specialist to "determine the next steps".
But the three-time major winner added: "I'll be back with one hip and no ankle ligaments when the time is right.