Only 8 coaches have beaten Bill Belichick in a playoff game. 3 of them did it while coaching the Denver Broncos 

• Mike Shanahan – 1994 Denver Broncos
• Bill Cowher – 2005 Pittsburgh Steelers
• Tony Dungy – 2006 Indianapolis Colts
• Tom Coughlin – 2007 & 2011 New York Giants
• Jim Harbaugh – 2009 & 2012 Baltimore Ravens
• Rex Ryan – 2010 New York Jets
• John Fox – 2013 Denver Broncos
• Gary Kubiak – 2015 Denver Broncos