The father of teenage British diving champion Tom Daley has died from brain cancer at the age of 40, and so misses out on his dream of seeing his son compete in the London 2012 Olympic Games.
Robert Daley, dubbed a "passionate and proud" father, had vowed to survive with his illness long enough to watch Tom compete in the Olympics, but on Friday night succumbed to his long battle against it.
Mr Daley, who accompanied his son to tournaments and became a familiar figure at the poolside, died "peacefully" with his family by his side, British Swimming said.
London 2012 chairman Lord Coe has led the tributes, saying: "Tom's father Rob was a huge inspiration to him. His love and support helped Tom achieve what he has so far. I have been privileged to watch at close quarters Tom's progress over the last few years and saw for myself the close bond between them. Our thoughts are with Tom and his family."
Mr Daley's health had deteriorated since February after it was confirmed that a tumour had returned, five years after he was first diagnosed with the illness.
In an interview for a BBC documentary in October last year Mr Daley had said the thought of seeing his son dive at the Olympics had been a key motivation in helping him keep the illness at bay for so long. "I wonder if I'll make 2012, or see grandchildren? I do think 'why me'," he said. "London 2012 is a massive motivation for me. Am I going to be there?"
World platform champion Tom, who turned 17 last week, was with his father, and last night wrote on his Twitter page: "I love you so much Dad."
There was a minute's silence in memory of Mr Daley at the end of the BT Paralympic World Cup swimming events at the Manchester Aquatics centre, and Tom has been inundated with messages of condolence online.
Mr Daley's determination to support his son meant he made a late dash to Sheffield with his family last month to watch Tom and synchro partner Peter Waterfield claim their first gold medal together in the World Series.
Mr Daley leaves his wife Debbie and three sons Tom, William and Ben.