The Super Bowl is the biggest sports betting event of the year, with more than $1.3 billion expected to be legally wagered in the 38 states that offer it and Washington, D.C. While betting on the spread between the Kansas City Chiefs and the Philadelphia Eagles is enticing enough,

The Kansas City Chiefs and Philadelphia Eagles could both add to their franchises' history with wins in Sunday night's Super Bowl 59.

Eagles head coach Nick Sirianni has taken his team into uncharted territory. He is the only coach to lead the Eagles to two Super Bowls and only the third coach in league history to reach the big game twice in his first four seasons (joining Mike Tomlin and Joe Gibbs). His team enters the game with the No. 1 defense in the NFL.