AIR FORCE ACADEMY, Colo. (AP) — D.J. Hammond, sidelined early in the game when dazed by a helmet-to-helmet collision, returned to run for three touchdowns and throw for another, leading Air Force past Navy 35-7 on Saturday in his first career start.

Joseph Saucier also scored on a 48-yard run for Air Force (2-3), which took the first leg in the competition among the service academies for the Commander-In-Chief's trophy. Air Force will play at Army on Nov. 3 while Navy (2-3) plays Army on Dec. 8 in its final regular-season game.

Hammond was injured on a third-down run in the opening minutes of the game. He returned to throw a 61-yard touchdown pass to Ronald Cleveland and run for touchdowns of 1, 2 and 5 yards.

During Air Force's second offensive series, Hammond absorbed successive hits to his head by two Navy defenders. Shaken, Hammond lay on the ground for several moments while being tended to by team trainers and medical staff. He sat up and was helped to his feet before being led off the field for further examination.

Isaiah Sanders played in place of Hammond for most of the first quarter and part of the second before the starter was cleared to return.

Up by seven at halftime, Air Force added two touchdowns in the third quarter with Hammond leading a pair of 75-yard drives that he finished with 5- and 1-yard scoring runs, respectively. He added the 2-yarder early in the fourth quarter on a quarterback draw.

Navy struck first on a 2-yard touchdown run early in the second quarter by Garret Lewis, his first play in relief of starter Malcom Perry.

But the Falcons came back to score a pair of touchdowns less than two minutes apart in the second quarter to move in front 14-7 at the half, triggering a run of 35 consecutive points by the Falcons.

Hammond, in his second series since returning to the field, connected in the flat with Cleveland who turned a short reception into a 61-yard catch and run for a touchdown midway through the second quarter.

Saucier was able to turn the corner after taking a pitch from Hammond, outrunning defenders along the sideline to go in for the score.

After opening with an early score, Navy's offense, which entered averaging 36 points per game, could get no traction. In particular, the Midshipmen's running attack struggled against the Falcons' defense, gaining 129 yards, down from its average of 355.6 yards entering the game.