For the most part, each NFL team has its core of star players, those whose jerseys adorn the racks at local retail shops, the ones fans recognize and run to for autographs. However, with 53 players rostered, role players and spot-starters need to step up in order to help the team win.

Heading into 2017, the Buffalo Bills have what many would call a top-heavy roster, featuring big-name players such as Tyrod Taylor, LeSean McCoy, Sammy Watkins, Jerry Hughes and Kyle Williams, among others.

The team underwent a massive roster overhaul during the offseason. It hired a new coaching staff and acquired relatively inexpensive and inexperienced players that mesh with the philosophy of new head coach Sean McDermott.

If the Bills want to put an end to their 17-year playoff drought, they’ll need several of their young players and free agent signings to take the next step in their development and complement the team’s stars.

With training camp just around the corner, here are four players that could be unsung heroes for Buffalo this season.

WR Andre Holmes

After letting Robert Woods, Marquise Goodwin and Justin Hunter walk in free agency, the Bills signed several veteran, yet unproven, wide receivers to complement their No. 1 option, Sammy Watkins, who is returning from an injury-plagued 2016 campaign.

One of the more under-the-radar signings Buffalo made was former Oakland Raiders wide receiver Andre Holmes. Despite the second-round selection of Zay Jones in the 2017 NFL Draft, Holmes figures to be the leading candidate for the No. 2 receiver spot.

In 2014, the 29-year-old made 13 starts, recording 47 catches for 693 receiving yards and four touchdowns in 16 games. Due to the emergence of Amari Cooper and Michael Crabtree, Holmes was relegated to a reserve role, although he played in all 32 games, making 28 catches for 327 yards and seven touchdowns in the last two seasons.

Holmes brings much-needed size to Buffalo’s receiving corps, and his 6-foot-5, 210-pound frame should provide Tyrod Taylor with a big red zone target that can use his body to box out defenders in the short-to-intermediate passing game as well.

Watkins’ talent is undeniable, but his health is one of the biggest concerns heading into training camp and the preseason. The Bills will need to rely on a player like Holmes to take some pressure off of the former No. 4 overall draft pick.