Richard Williams, the father of tennis stars Venus and Serena, suffered a stroke just days before Serena's victory at Wimbledon, his wife has revealed.
Mr Williams, 74, was released from hospital last week following the stroke but has been left with memory issues.
His third wife, Lakeisha Williams, 37, told Radar Online that he was stable but 'not at 100 per cent'.
Mr Williams is believed to have had the stroke while his daughters Serena and Venus were competing at Wimbledon, but they kept the news to themselves.
Serena won the women's singles
title this year, while she and Venus won the women's doubles.
Mr Williams is unaware that he had a stroke and is more concerned with not returning to hospital, which he calls 'prison', Lakeisha said.
'His mind is telling him that since he was once in charge of his life, after what's happened he's not accepting it,' his wife said.
'To him he's a normal person – nothing happened to him.
'His condition is fair – he's up and walking around but he's not at 100 per cent,' Lakeisha said.