Denver Broncos
Following their victory over the Dallas Cowboys, the Denver Broncos are the biggest favorites in NFL history. Reuters

Week Six of the 2013 NFL season is historic when it comes to sports gambling. The schedule of games includes the largest point spread the league has seen since the AFL-NFL merger.

Following their dominant start to the year, the Denver Broncos opened as 28-point favorites against the Jacksonville Jaguars. Peyton Manning leads an offense that has scored the most points ever through the first five games. That surpasses the 26-point betting line that was set on Dec.5. 1976, when the Pittsburgh Steelers hosted the Tampa Bay Buccaneers.

After less than two days, the line has already moved to 26.5 points. According to sportingcharts.com, nine other games in NFL history have featured point spreads of at least 20 points. The only favorite that covered was the Steelers in the 1976 contest, though none of the underdogs won outright. This season, the Jaguars have yet to cover, while the Broncos are 3-2 against the spread.

Besides the Broncos, there are several other heavy favorites on Sunday. The Seattle Seahawks and San Francisco 49ers are both giving their opponents over 10 points. The first-place Seahawks are coming off their first loss of the year, while the defending NFC champs have won two straight games by four scores.

Only one Thursday night game in 2013 has been decided by one score. That trend is expected to continue this week when the New York Giants visit the Chicago Bears. Eli Manning has thrown the most interceptions in football en route to his team’s 0-5 record.

On Sunday night, the Dallas Cowboys are giving the Washington Redskins 5.5 points. Twenty-four hours later, the Indianapolis Colts are road favorites against the San Diego Chargers in the Monday night game.

The Atlanta Falcons and Miami Dolphins are idle this week. Both teams are coming off home losses, with the Falcons dropping to 1-4, following an upset by the New York Jets.

Below are the complete betting lines for all the Week Six games, including the point spreads and totals. These are the consensus odds from multiple sportsbooks in Las Vegas.

Thursday

New York Giants (+8) at Chicago Bears, 47

Sunday

Oakland Raiders (+9) at Kansas City Chiefs, 40.5

Philadelphia Eagles (-1) at Tampa Bay Buccaneers, 46

Green Bay Packers (-3) at Baltimore Ravens, 48

Detroit Lions (-2.5) at Cleveland Browns, 45.5

Carolina Panthers (+2.5) at Minnesota Vikings, 44

St. Louis Rams (+7) at Houston Texans, 43

Pittsburgh Steelers (+1) at New York Jets, 40.5

Cincinnati Bengals (-7.5) at Buffalo Bills, 42

Tennessee Titans (+13.5) at Seattle Seahawks, 40.5

Jacksonville Jaguars (+26.5) at Denver Broncos, 53

Arizona Cardinals (+11) at San Francisco 49ers, 41.5

New Orleans Saints (+2.5) at New England Patriots, 49.5

Washington Redskins (+5.5) at Dallas Cowboys, 53

Monday

Indianapolis Colts (-1.5) at San Diego Chargers, 49