Racing pundit John McCririck has lost his age discrimination employment tribunal case against Channel 4.
The 73-year-old argued that he was sacked by the broadcaster last year because of his age.
However, a Central London Employment Tribunal panel unanimously ruled against him, McCririck told PA.
He said: "This is an historic setback for all employees in their 30s to their 70s.
"After such a landmark judicial verdict, my failed legal action ensures that anonymous suits and skirts, who control the media, numerous other businesses and the public sector, will now enjoy complete freedom to replace older employees whatever their unimpaired ability and merit."
A new presenting team, fronted by Clare Balding, took over last year.