This season, the Jacksonville Jaguars.
2007.
The Jacksonville Jaguars beat the Steelers one time in the playoffs. It was on January 5, 2008 by the score of 31-29.
Jacksonville jaguars, 2007
The Tennessee Titans beat the Jacksonville Jaguars by a score of 33-14.
Jacksonville leads the all-time series three games to two. On Sunday, October 31, 2010 at Cowboys Stadium, the Jaguars defeated the Cowboys, 35-17.
As of the 2008 season, that would be the St. Louis Rams who have defeated the Jaguars in both of their regular season meetings. The Jaguars have not defeated the New England Patriots in the regular season but have defeated them in the playoffs.
In the 2007 playoffs, the Jacksonville Jaguars defeated the Steelers 31-29 in the Wild Card game played on January 5, 2008.
Three times.Overall the Broncos are 3-4 against the Jaguars in regular season play, and tied at 1-1 in post-season play.A link to the head-to-head record for these franchises has been added to the 'related links' section at the bottom of this answer.
No, because tigers beat lions and lions beat jaguars.
On October 31, 2010, the Jaguars defeated the Cowboys, 35-17, at Cowboys Stadium.
The Houston Texans won the following four games in 2002:September 8th - Dallas Cowboys (19-10)October 27th - Jacksonville Jaguars (21-19)November 24th - New York Giants (16-14)December 8th - Pittsburgh Steelers (24-6)