Washington Redskins wide receiver DeSean Jackson suffered a Grade 2 separated right shoulder during a training camp workout Thursday and is expected to be out the next two weeks, according to ESPN.

Participating in a one-on-one drill, Jackson caught a pass down the sideline and fell out of bounds near the end zone before sliding into a blocking sled. CBS Sports posted a video of the full play with Jackson laying on the ground for several minutes afterwards, but he did walk off under his own power and stayed on the sidelines with his shoulder wrapped.

Shoulder separations are usually diagnosed under one of three grades, with a Grade 2 falling in the middle in terms of severity. A separation involves the acromioclavicular, or AC, joint enduring a partial dislocation with some displacement from the arm’s socket, according to the Colorado-based Steadman Clinic.

Entering his second season with Washington, Jackson was hoping to build off a solid 2014 during which he totaled 1,169 yards and six touchdowns off 56 receptions despite injuries and inconsistent play from the Redskins quarterbacks. Prior to the start of training camp the 28-year-old former Philadelphia Eagle made headlines for claiming no defensive back in the NFL could cover him.

Washington has made no official announcement of Jackson’s status yet, but he’s likely to miss the team’s first two preseason games beginning with Aug. 13’s trip to Cleveland and Aug. 20's home matchup with Detroit. The last two preseason games, at Baltimore on Aug. 29 and vs. Jacksonville on Sept. 3, are typically when players hoping to make the final 53-man roster play the most, thus Jackson could sit out until the Redskins season opener against Miami on Sept. 13.

For the rest of camp, veteran receiver Pierre Garcon is expected to get more reps as the No. 1 receiver, with second-year receiver Ryan Grant, former Cardinal Andre Roberts, and rookies Jamison Crowder and Evan Spencer next up on the depth chart.