The New England Patriots will play the Jacksonville Jaguars Saturday night (8 p.m.) at Gillette Stadium.The Jaguars won a wild 31-29 decision over the Pittsburgh Steelers at Hines Stadium Saturday, but the Pats’ opponent wasn’t finalized until Sunday, when the Tennessee Titans fell to the San Diego Chargers, 17-6.Two years ago, the Patriots beat Jacksonville in the first round of the playoffs.The Patriots are seeking to become only the second team in National Football League history to go undefeated in the regular season and then win the NFL championship. The last team to do that were the Miami Dolphins in 1972-73.Jaguars quarterback David Garrad passed for 140 yards Saturday, but his 32-yard scramble on a do-or-die play in the fourth quarter set up Jacksonville’s winning field goal.The Patriots counter with NFL Most Valuable Player Tom Brady, who threw 50 touchdown passes this season.They also have wide receivers Randy Moss (23 TD passes) and Wes Welker (114 receptions) in their arsenal, as well as running backs Laurence Maroney, (who became much more of a factor late in the season after being virtually invisible prior to that); Kevin Faulk, a valuable third-down runner as well as a very good blitz defender; and Heath Evans, also a good blocker.The Jaguars punched their ticket to Foxborough Saturday night – but were almost detoured along the way.Jacksonville frittered away a 28-10 fourth-quarter lead as the Steelers came all the way back to go up by one, 29-28.Garrard aided the Steelers’ comeback by throwing two interceptions – one less than he had all season – only to come up with the play that may have saved the Jaguars’ season.”They kind of lost their gaps, they thought pass, I was able to get through there,” Garrard said. “I just wanted to get a first down. I did enough to get into field-goal range and that was all I was thinking about.”Jacksonville’s Josh Scobee kicked a 25-yard field goal with 37 seconds remaining.In San Diego, 13 years after their last postseason victory, the Chargers finally came to life late in the second half Sunday to beat the Tennessee Titans 17-6.Running back LaDainian Tomlinson was held to 42 yards, as the Titans bottled him up and dared quarterback Philip Rivers to beat them.Rivers did just that, throwing a 25-yard touchdown pass to Vincent Jackson late in the third quarter that gave San Diego its first lead at 10-6.Tomlinson finally found the end zone midway through the fourth quarter, on a fourth-down leap over the pile from inside the 1-yard line that had to survive a video replay.Tomlinson went airborne and was met by linebacker Stephen Tulloch, but the running back used a second effort to get the ball over the goal line.Material from the Associated Press was also used in this report.