from CBS Sports...Five biggest instant impact rookies
Ed Oliver, DT, Bills - This is the best combination of value and fit in the entire first round. Buffalo was active in free agency, yet entered the draft with a gaping hole at the play-making three technique defensive tackle spot vacated by the retired Kyle Williams.
Oliver was born to play three technique. He's an athletic marvel, the most electric mover we've seen at defensive tackle since Aaron Donald joined the league in 2014. Oliver was able to overcome playing predominately at the nose tackle spot at 6-foot-1 and 280-plus pounds -- basically coaching malfeasance -- to amass 53 tackles for loss and 13.5 sacks in his three seasons at Houston.
With an open gap staring him in the face when he looks up from his three-point stance on the outside shoulder of the guard -- or at the one-technique outside the center -- Oliver's elite first step and sustained speed will allow him to create consistent havoc. And in 2018, Oliver flashed more pass-rushing moves than in his first two years with the Cougars. The run-stopping prowess has been there since his true freshman season in 2016.
The Bills actually finished sixth in defensive pressure rate in 2018 at 37.1%. But outside of Kyle Williams and a sprinkling of pass-rush production from Jordan Phillips and Harrison Phillips, most of Buffalo's pressure was created by Jerry Hughes on the outside.
Oliver is in prime position to be "freed" on the inside with the Phillips duo and the massive Star Lotulelei eating double teams. The No. 9 overall pick in this draft will be the definition of "instant impact" on Buffalo's deep defensive line, both against the run and the pass. My pre-draft comparison for him was John Randle.