ARTICLE AD BOX
Stamford Bridge has become the first English top-flight stadium to host standing fans in almost 30 years when Chelsea faced Liverpool on Sunday.
Chelsea are one of five clubs who were approved to trial safe-standing areas during the second half of this season.
It is the first time fans have stood at a game since laws came into force in 1994 stipulating stadiums in England's top two tiers must be all-seater.
More than 12,000 safe-standing spaces have been created at Stamford Bridge.
The sections, which will be in place for home and away fans at the trial venues, give fans the option to sit or stand, with a seat as well as a barrier running between rows.
Fans were using spaces in the Shed End and the lower tier of the Matthew Harding Stand during the Premier League game.
Manchester United, Manchester City, Tottenham and Championship side Cardiff are the other clubs taking part in the trial.
Standing in English football's top two divisions was outlawed following recommendations made in the Taylor Report into the 1989 Hillsborough disaster, which led to the deaths of 97 Liverpool fans.
The clubs involved must adhere to strict conditions, including enhanced use of CCTV, improved steward training and fans strictly limited to their designated space.
Before the game, Margaret Aspinall, whose 18-year-old son and Liverpool fan James was killed in the crush at Hillsborough, said her "opinion has completely changed" on safe standing.
"Those who want to stand should be allowed to stand," she said.
"Fans are treated completely differently now to what they were in the 1970s and 1980s. They are really monitored. They are more careful. They've learned lessons because of Hillsborough."
- Your friendly neighbourhood Spider-Man: Tom Holland and Zendaya attempt a Harry Potter quiz and chat about Marvel's latest hit
- Running from a past he can't remember: Brand new drama set in the Australian outback starring Jamie Dornan