The 2013 season was the Kansas City Chiefs' 44th in the National Football League (NFL), their 54th overall and their first under the head coach/general manager tandem of Andy Reid and John Dorsey. After their 26–16 win over the Philadelphia Eagles in Week 3, which was also coach Andy Reid's first visit to Philadelphia since the Eagles fired him the season prior, the Chiefs vastly improved on their 2–14 record from 2012 just three weeks into the season. After defeating the New York Giants 31–7 in Week 4, the Chiefs became the first team in NFL history to win two or fewer games in the previous season, and win the first four games the next. On October 13, 2013 against the Oakland Raiders, Chiefs fans broke the Guinness World Record for loudest crowd roar at an outdoor stadium with 137.5 decib