PLAY OF THE GAME: Backup quarterback Ryan Nassib hit wide receiver Corey Washington for a 73-yard, go-ahead touchdown deep down the right sideline early in the fourth quarter.

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WHAT WE LEARNED ABOUT THE OFFENSE: The Giants won the opening coin toss -- which was ceremoniously carried out by Hall of Famers Harry Carson and Jim Kelly -- and elected to receive, setting up the debut of their new system under offensive coordinator Ben McAdoo. It took until the third series for the offense to get going when running backs Rashad Jennings and Andre Williams combined for 62 rushing yards during a 12-play, seven-minute drive that was capped by a three-yard touchdown by Williams. That would end the night of quarterback Eli Manning (6 of 7 for 43 yards) before backup Ryan Nassib entered the game. Jennings did the heavy lifting early on, carrying the ball seven times for 23 yards in the first quarter in addition to three catches for 20 yards. In relief, Nassib (7 of 12 for 139 yards and a touchdown) had the highs and lows of a young quarterback, but he did find a rhythm with wide receiver Marcus Harris, who finished with three catches for 40 yards, in addition to his bomb to Washington. **>> WATCH HIGHLIGHTS**

WHAT WE LEARNED ABOUT THE DEFENSE: The defense hasn't changed as much as the offense since last season, but there will definitely be a new identity in 2014.The secondary could be a major strength this season, which we've seen so far in training camp and now through the first preseason game.  Cornerback Prince Amukamara looked sharp playing opposite offseason acquisition Dominique Rodgers-Cromartie while safety Cooper Taylor and cornerback Zack Bowman notched interceptions going into and coming out of halftime. Meanwhile, a pair of second-year defensive linemen showed what they bring to the table. Defensive tackle Johnathan Hankins was a game-day captain and started on Sunday, and defensive end Damontre Moore delivered one of the biggest hits of the night when he sacked Jeff Tuel in the second quarter.

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WHAT WE LEARNED ABOUT THE SPECIAL TEAMS: Quintin Demps and Jerrel Jernigan lined up first to return kickoffs and punts, respectively. Kicker Brandon McManus made his only field goal attempt, a 47-yarder to tie the game in the second quarter, and Josh Brown converted two extra points. Meanwhile, the Giants had a breakdown in punt protection when Bills wide receiver Marcus Easley blocked Steve Weatherford's punt in the first half. >> WATCH HIGHLIGHTS
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ROOKIE WATCH:** RB Andre Williams (7 carries for 48 yards and one touchdown), LB Devon Kennard (2 tackles), Safety Nat Berhe (3 tackles), DT Jay Bromley (1 tackle), DT Kelcy Quarles (1 tackle), DE Kerry Wynn (1.0 sack).