This summer, ESPN.com is taking a closer look at each scholarship player on the Oklahoma Sooners' roster in our Crimson Countdown series. Each day, we analyze each player’s impact on the program since arriving on campus, his potential impact this fall and his long-term projection. Starting with No. 1 Dominique Alexander, the series follows the roster numerically through No. 98 Chuka Ndulue.

No. 79 Daryl Williams, tackle, 6-foot-6, 329 pounds, senior

Impact thus far: Williams has been outstanding for the Sooners and appears to be taking his contributions to another level with his senior season approaching. Williams started his first college game as a redshirt freshman before injury issues limited him to nine games in 2011. In 2012, Williams became a mainstay on the Sooners' offensive line, starting 10 games before a knee injury ended his season. Last season, Williams earned second-team All-Big 12 honors by starting all 12 regular-season games at right tackle before shifting to left tackle in the Allstate Sugar Bowl.

Impact in 2014: Williams should be one of the anchors of the offensive line and offense as a whole. All-conference honors are within his sights and he has emerged as a team leader heading into the season.

Long-term upside: He should go down as a three-year starter and two-time all-conference honoree when his career is over.

Evaluation grade for Williams: A. What more could you possibility expect from a three-star signee? Williams started his first game in crimson and cream and only couldn’t regain his starting spot because Lane Johnson, a future No. 4 overall pick in the 2013 NFL draft, had replaced him. Williams became one of the league’s better tackles since he was given the opportunity.

Development grade for Williams: A. If Williams hadn’t redshirted in 2010, he would have exhausted his eligibility by now. Instead, he'll be a veteran anchor to the 2014 offensive line during his fifth year on campus.