Since the NFL-AFL merger in 1970, there have been 18 times when a team went into a playoff game with a chance to complete a three-game season sweep, according to STATS, Inc. Those teams are 11-7. Here are the previous matchups, with the team that won both regular-season games listed first, along with the postseason result:
Season Teams Result
1982 Miami Dolphins vs. New York Jets --Won
1983 Seattle Seahawks vs. Los Angeles Raiders --Lost
1986 New York Giants vs. Washington Redskins --Won
1989 Houston Oilers vs. Pittsburgh Steelers --Lost
1991 Kansas City Chiefs vs. Los Angeles Raiders --Won
1992 Kansas City Chiefs vs. San Diego Chargers --Lost
1993 Los Angeles Raiders vs. Denver Broncos --Won
1994 Minnesota Vikings vs. Chicago Bears --Lost
1994 Pittsburgh Steelers vs. Cleveland Browns --Won
1997 New England Patriots vs. Miami Dolphins --Won
1997 Green Bay Packers vs. Tampa Bay Buccaneers --Won
1998 Dallas Cowboys vs. Arizona Cardinals --Lost
1999 Tennessee Titans vs. Jacksonville Jaguars --Won
2000 New York Giants vs. Philadelphia Eagles --Won
2002 Pittsburgh Steelers vs. Cleveland Browns --Won
2004 St. Louis Rams vs. Seattle Seahawks --Won
2004 Green Bay Packers vs. Minnesota Vikings --Lost
2007 Dallas Cowboys vs. New York Giants --Lost