Football and rugby fixtures will be moved to avoid a clash with the funeral of the Duke of Edinburgh.
The English Football League announced all its games scheduled for 3pm on Saturday would be rescheduled, while the Premier League was in talks with Government over its match between Wolverhampton Wanderers and Sheffield United.
Premiership Rugby confirmed it was also planning to move at least three of its four fixtures that day.
Most, if not all, of the games were expected to be played on the same day but kick off earlier or later than previously scheduled.
An EFL spokesperson said: “As a mark of respect, EFL matches scheduled for 3pm on Saturday 17 April will be moved to avoid a clash with the funeral of HRH The Prince Philip, Duke of Edinburgh.
“The EFL will now work with its clubs to determine at what time the matches will be played, giving consideration to the timing of the service. An announcement will follow in due course.”
It was unclear on Saturday night what impact the funeral would have on other sport in Britain on Saturday, including on cricket’s County Championship.
Tributes have been paid across the sporting weekend to Prince Philip, who died on Friday aged 99.
A two-minute silence was held before Saturday's Grand National, with jockeys wearing black armbands and flags flown at half-mast.
There were periods of silence before all Premier League and EFL matches, with players and officials wearing black armbands.
England women’s Six Nations game against Italy saw the English flag flown at half-mast and a two minutes’ silence, with England players and UK officials wearing black armbands.
All clubs in Scotland’s four professional divisions observed a minute’s silence, with a moment of silence before all Cymru Premier and Welsh Premier Women’s League matches, while the Northern Ireland Football League left a decision on tributes to be made by clubs.
Tributes were paid at rugby league’s Challenge Cup matches, while British Rowing athletes wore black ribbons at the European Championships.
Buckingham Palace said the Duke of Edinburgh had “passed away peacefully” at Windsor Castle on Friday morning.
Tributes were paid to him at a number of football fixtures on Friday, including Fulham’s Premier League match against Wolves, England women’s friendly in France, Wales women’s friendly against Canada, as well as at the Aintree race meeting and during county cricket fixtures.
Sporting stars and governing bodies also paid their respects.