On the whole, the Buffalo Bills have drafted well over the past five seasons, adding key starters such as defensive tackle Marcell Dareus, wide receiver Sammy Watkins, offensive tackle Cordy Glenn, safety Aaron Williams and cornerbacks Stephon Gilmore and Ronald Darby.

But their 2013 draft? That's another story, and judging by general manager Doug Whaley's comments this week at the Senior Bowl, wide receiver Robert Woods -- the 41st overall pick that spring -- is no longer viewed favorably by the team.

"We'd love to [have a bona fide No. 2 receiver], but we think with the mix of guys we have we can generate a No. 2 receiver, between [Marquise] Goodwin, [Robert] Woods, [Greg] Salas who we signed," Whaley told the Bills' website. "Leonard Hankerson if we can get him back, and then Greg Little that we signed. So we've got a mix of guys who might not be a bona fide No. 2, but we can use those guys in different roles and have a complementary No. 2 just by mixing some guys in."

Woods' being mentioned in the same breath as Goodwin, Salas and Hankerson is bad news for the 2013 second-round pick and somewhat surprising given his performance as the Bills' No. 2 receiver over the past three seasons.

Despite dealing with a revolving door at quarterback his first two seasons, Woods caught 40 passes for 587 yards and three touchdowns as a rookie and added 65 receptions for 699 yards and five touchdowns in 2014.

Woods' production dipped slightly last season, but several factors contributed to that. First, the Bills had the NFL's fourth-highest percentage of running plays (43.9), leading Woods to declare to The Buffalo News in November that he was a "blocking receiver." Second, Woods told ESPN that he tore his groin in August and played 14 games with that injury until it finally required surgery in late December. Third, the Bills signed Percy Harvin last offseason and Harvin started the first five games of the season, taking opportunities away from Woods.

Regardless, the Bills' top decision-makers clearly do not see Woods as a set-in-stone No. 2 option, and they've opened competition at the spot to less accomplished players. For his first three seasons in Buffalo, Woods was clearly a cut above Goodwin, the Bills' 2013 third-round pick who caught 17 passes as a rookie but has been limited to three receptions over the past two seasons as he's struggled to stay healthy and prove he's more than a speed threat.

Meanwhile, Salas and Hankerson were late-season signings by the Bills in December who appeared to be more short-term insurance than long-term solutions. Salas, who would have become an unrestricted free agent in March, was re-signed earlier this month. Hankerson is still scheduled to become an unrestricted free agent.

The Bills could opt to re-sign Harvin or find a No. 2 receiver through free agency or the draft, but there's no mistaking that the Bills feel that they can upgrade from Woods.

"I can speak more for myself for our team, and I don't want to put words into the coaches' mouth about what they might think what they need," director of player personnel Jim Monos told WGR 550 last week. "I think Doug talked about it and I'll talk about, I'd like to see us get [another receiver]. Percy Harvin was supposed to be a big help for us, and we're still not sure what's going on. He's got to make some decisions here coming up. We need to get somebody opposite of Sammy to be a real threat to that defense. I think that's a big key for our offense, to take one more step."

Woods' falling out of favor in Buffalo is the latest strike against the team's 2013 draft class, which was technically the final draft under former GM Buddy Nix but also included input from Whaley throughout the process. The team whiffed on quarterback EJ Manuel with the No. 16 overall pick, and the Bills aren't dismissing the possibility of drafting another quarterback this spring. Indeed, they shouldn't throw out the idea: Manuel hasn't shown long-term potential even as a primary backup to Tyrod Taylor, and his performance in London in October against the Jacksonville Jaguars was dreadful.

After Manuel and Woods, the Bills selected linebacker Kiko Alonso with the No. 46 overall pick. He got off to a hot start with the Bills in 2013 before his performance tailed off later that season. He's dealt with injuries since, including a torn ACL in 2014, but Pro Football Focus graded him as one of the NFL's worst linebackers this season. The Bills were wisely able to trade him to the Philadelphia Eagles last spring for running back LeSean McCoy, but the pick itself isn't looking nearly as smart as it once did.

The Bills selected Goodwin, a disappointment to this point, in the third round, and later added two safeties -- Duke Williams in the fourth and Meeks in the fifth. Both remain contributors to the team but neither has emerged as more than a role player on defense. Williams never seemed to click with the Bills' new coaching staff and he was passed over this season in favor of Leodis McKelvin and, later, Bacarri Rambo.

Buffalo then wrapped up its 2013 draft by selecting Dustin Hopkins, now the Washington Redskins' kicker, in the sixth round and tight end Chris Gragg, a marginal contributor to the Bills' offense the past three seasons, in the seventh.