At 3-0, the Philadelphia Eagles are quickly gaining altitude. FiveThirtyEight’s preseason Elo ratings gave the Eagles a mere 1 percent chance to win the Super Bowl and a 27 percent probability of winning the NFC East; now those numbers are up to 6 percent and 59 percent, respectively.Three of the league’s four other undefeated teams had much higher preseason Super Bowl odds: Denver was at 11 percent, with New England at 7 percent and Minnesota at 4 percent.