In 1978, Argentina beat Peru 6-0 to advance to the final of the World Cup. Some believe Peru were coerced into laying down.
in 1970, Brazil beat Italy 4-1 to win its third World Cup with Pelé scoring a goal and assisting two others.
In 1988, the LA Lakers beat the Detroit Pistons in seven games to win back-to-back NBA titles. But this game ended weirdly. Watch the video here: https://www.youtube.com/watch?v=FIs_G4zpjis
In 2012, the Miami Heat beat OKC to win the NBA title. LeBron James was named series MVP and it was his first championship.
In 1994, Steffi Graf was beaten in her first round match at Wimbledon by Lori McNeil. Graf, the three-time defending champ, became the first defending champ in the open era to lose in the opener.