Tank Carradine, the 49ers' second pick in this year's draft, won't make his debut until the 2014 season. The 49ers placed Carradine, a defensive end, on injured reserve today, ending his season and opening a roster spot they used on guard Ryan Seymour, whom the 49ers signed off the Seahawks practice squad. Seymour was a seventh-round pick by Seattle this year out of Vanderbilt. Earlier in the year, the 49ers signed receiver Chris Harper off the Seahawks' practice squad. They have since waived Harper.
Carradine, the 40th pick in the draft, suffered a torn ACL last November from which he only recently returned. He did not re-injure the knee, but after a recent examination, team doctors decided it would be wiser to shut him down for the season and to continue to rehabilitate it so that he is healthy for the beginning of the 2014 offseason. Carradine had been on the active roster since last month but has not dressed for any games. The 49ers also have an abundance of defensive linemen this year, including another draft pick, Quinton Dial.
The 49ers also added wide receiver Devon Wylie to the practice squad. Wylie, who played at Granite Bay High outside of Sacramento, has bounced around from the Chiefs, the team that drafted him in 2012, to the Cardinals, Steelers, Titans and Seahawks this year. Wylie has experience returning punts and had a good outing against the 49ers - two returns for 61 yards - in the preseason. The 49ers had an open spot on the practice squad after the Dolphins signed safety Michael Thomas to their 53-man roster.
Wylie also spent time on Seattle's practice squad. The Seahawks signed him to the practice squad Thursday and released him on Saturday.
-- Matt Barrows