Oregon starting tackle Tyler Johnstone out for season with ACL tear

Oregon running back Byron Marshall, left, celebrates his touchdown against Washington with Tyler Johnstone (64) in the first half of an NCAA college football game, Saturday, Oct. 12, 2013, in Seattle. (AP Photo/Elaine Thompson)

A key member of Oregon’s offense will miss the entire 2014 season.

Left tackle Tyler Johnstone confirmed to CSNNW.com that he re-tore the ACL in his right knee – the injury he suffered in the Ducks’ Alamo Bowl victory over Texas last December. The injury occurred “last week,” and Johnstone is scheduled to have surgery on the knee on Friday.

Johnstone, a redshirt junior, had been rehabbing the knee throughout the offseason with the hopes of being ready to play in the Ducks’ season opener against South Dakota on August 30, but he said he “heard a popping noise” in his knee during practice. Tests revealed that Johnstone had re-injured his ACL.

The 6-foot-6, 289-pound Johnson was entering his third straight season as the Ducks’ starter at left tackle. After redshirting in 2011, Johnstone started all 13 games in 2012 and was named Freshman All-American. Before leaving the Alamo Bowl early with the injury, Johnstone, a former four-star recruit, also started every game for the team in 2013 and was named honorable mention All-Pac 12.

Oregon was set to return all five of its starters along the offensive line that helped the Ducks lead the Pac-12 in total offense (565 yards per game), rushing (273.5 ypg) and scoring (45.5 points per game).

With Johnstone sidelined, redshirt junior Andre Yruretagoyena seems like a likely candidate to step into the left tackle spot. Yruretagoyena, a former four-star recruit in the 2011 class, has appeared in 11 games in his Oregon career.

For more Oregon news, visit DuckSportsAuthority.com.

- - - - - - -

Sam Cooper is a contributor for the Yahoo Sports blogs. Have a tip? Email him or follow him on Twitter!