4. Denzel Mims, WR, NY Jets
Let's get this one out of the way first. It's hardly fair to Denzel Mims to insist that he's "underperformed" so far in 2021, mostly because he's barely even been given the opportunity to perform in the first place.
Nonetheless, it's hard to consider his sophomore NFL season anything other than a disappointment through six weeks.
Mims has been active for only three games, all of which were brought on as a necessity due to injuries. He played just 21 total offensive snaps and has been rendered an afterthought in a struggling Jets offense.
Despite his lack of playing time, Mims has still produced when on the field. He's hauled in three catches for 73 yards recording one reception for every seven snaps he's played.
But if Mims can't find a way to stay on the field, it's hard to see his 2021 season getting any better.
Hopes were high this offseason that Mims could build upon a promising rookie campaign and develop into a long-term starter for the Jets this season.
Unfortunately, he remains firmly in the doghouse of the Jets' coaching staff, and barring any unforeseen changes, his future with the organization looks murky at best.
It's hard to blame the player here, but Mims' 2021 season has certainly been a major disappointment.