ARLINGTON, Texas—Dak Prescott ran toward the tunnel, raising his arms to the fans and tossing them souvenirs after the Dallas Cowboys manhandled the Philadelphia Eagles in prime time. The scene was a stark contrast to almost a year earlier, when the star quarterback was in tears as he rode on a cart through the same spot after the gruesome ankle injury that ended his season. Prescott threw for three touchdowns in his first home game since the injury, Trevon Diggs returned an interception 59 yards for a score and the Cowboys beat the Eagles 41–21 on Monday night. “Just thankful for everything that I’ve been through, all of the hard work that made me account for just to be back out here doing what I love,” Prescott said. “It’s the greatest place to play football.” Ezekiel Elliott ran for a season-high 95 yards and two touchdowns, and tight end Dalton …