From 1933, when the first NFL championship game was played, to 2008, when Super Bowl XLII was played, the team that has lost the most NFL championship games is the New York Giants who have lost 11 NFL championship games (pre Super Bowl) and 1 Super Bowl for a total of 12.
Oakalnd Raiders
The Pittsburgh Steelers have played in 15 AFC championship games. That is the most in NFL history.
The team that has lost the most AFC Championship Games is the New England Patriots, with a total of five losses in this playoff round. They faced defeats in the AFC Championship in the years 1985, 1996, 2006, 2011, and 2016. Despite these losses, the Patriots also have a strong record in the AFC, having won multiple championships and Super Bowl titles.
New England
Indiana 1981
49ers i think 49ers i think
barcrelona
the Yankees
every team
No. Every World Series team with a 3-0 lead has gone on to win the world championship.
The Houston Rockets defeated the Orlando Magic, 4 games to 0, to win the 1995 NBA championship.
the new york mets