wrapped up with a full slate of 16 games on Sunday, December 29, all of which were intra-divisional matchups. Scheduling formula Under the NFL's scheduling formula, each team played each of the other three teams in their own division twice. In addition, a team played against all four teams in one other division from each conference. The final two games on a team's schedule were against the two teams in the team's own conference in the divisions the team was not set to play who finished the previous season in the same rank in their division (e.g. the team which finished first in its division the previous season would play each other team in their conference that also finished first in its respective division). The pre-set division pairings for 2013 were as follows: The 2013 regular season schedule was released on April 18, 2013. Regular season highlights The 2013 regular season began on Thursday, September 5, with the NFL Kickoff Game in which the Denver hosted the Baltimore. The game was a rematch of a two-overtime playoff game of the previous season and broadcast on NBC. The Ravens, as the reigning Super Bowl champions, would normally have hosted the kickoff game, however, a scheduling conflict with their Major League Baseball counterparts, the Baltimore Orioles, forced the Ravens to start the season on the road (the Ravens' and Orioles' respective stadiums share parking facilities). The Ravens became the first Super Bowl winner since to open their title defense on the road. The Broncos defeated the Ravens 49–27 on the strength of a record-setting performance by quarterback Peyton Manning. Manning completed 27 of 42 pass attempts for 462 yards and seven touchdowns. Manning set or tied numerous league records in the game including most touchdown passes in a game (tied with five others) and records for most career games with at least six, five and four touchdown passes. There were two NFL International Series games held at Wembley Stadium in London. On September 29, the Minnesota defeated the Pittsburgh 34–27. On October 27, the San Francisco defeated the Jacksonville 42–10. This season was the first of a four-year agreement for the Jaguars to play a home game in London (an agreement which was later extended an additional four years). The San Diego and Oakland played an unusual late night game in the season's fifth week on October 6. The game, originally scheduled