The Buffalo Bills' front-office spent the offseason delivering on its commitment to upgrade the talent on offense.

Now, veteran center Eric Wood says, it's on the players to start delivering by saying there's "no excuse" for the offense not to show marked improvement.

Wood provided his assessment after getting a firsthand glimpse of the Bills' new-look attack during a three-day voluntary minicamp that closed Friday. It's a unit that includes numerous additions brought in as part of the Bills' desire to improve what had been a popgun, EJ Manuel-led attack that contributed to Buffalo's 6-10 finish last year.

Buffalo particularly retooled its receivers by drafting Sammy Watkins in the first round, and acquiring Mike Williams in a trade with Tampa Bay.

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