In the early evening of Sunday, September 3rd, 1989, the last match of Group C of the South American qualifying round for the 1990 World Cup took place between Brazil and Chile in a tightly-packed Maracanã Stadium in Rio de Janeiro.
Both had won their home and away matches against the ever-so-weak Venezuela, the other member of their group. They also tied their first match, held in Santiago, and it was a very violent affair that ended with all the parties involved being escorted away by the police.
Thanks to their scored goals advantage, all the Brazil NT needed was a comfortable tie, while Chile had to go all-in for the victory. A daunting, nigh-impossible task, given Brazil (at the time) never ever lost a single World Cup Qualifier match.
After lots of failed shots and even more violence from the Chilean NT's players, Brazil managed to score in the beginning of the second half. Only a miracle could help Chile at that moment...
And it just so happened to appear at around the 30th minute mark, when the goalkeeper Ricardo "Cóndor" Rojas collapsed, with a lit flare beside him. His teammates went to his aid and saw him bleeding profusely from his forehead. Everything indicated he was hit by the flare. Seeing foul play from the fans in the stands, the Chilean players refused to go on with the match and carried Rojas to their locker room for proper medical treatment; seeing no way to change their minds, the referee declared the match forfeited.
Soon after, the Chilean football association bigwigs intended to bring the case to FIFA and Conmebol, citing the happening as a way to take out points for Brazil and thus qualify Chile for the World Cup in Italy the following year.
Except...
The flare went behind the keeper about four feet away from him. An exam made after the end of the match also revealed cuts and no blunt trauma or burns, the expected aftermath of being hit by a speeding, hot object in the head.
Rojas had no other choice but to confess he literally bladed himself, wrestling-style, with a shaving razor he hid in the velcro wrapping of one of his gloves, just waiting for a good opportunity to cut himself and claim unnecessary roughness from either one of the Brazilian players.
In the end, they oficially lost their match, Chile was banned from the qualifiers for the 1994 World Cup, and Rojas was banned from the sport for life - A decision that ultimately didn't stand up, as he successfully appealed against it so that he could work as a coach after his "compulsory" retirement.
Fun fact: The girl who lit the flare gained a bit of celebrity notoriety as "The Maracanã Rocket Launcher", complete with her doing a cover photo shoot for Playboy Magazine. She passed away in 2013 following a bout with a brain tumor.