Kenny Phillips #21 of the New York Giants tackles Early Doucet #85 of the Arizona Cardinals at University of Phoenix Stadium on October 2, 2011 in Glendale, Arizona. Giants won 31-27. (Photo by Norm Hall/Getty Images)

by Curtis Crabtree
KJR reporter
Twitter: @Curtis_Crabtree

RENTON - Friday's practice was a little different for the Seattle Seahawks as head coach Pete Carroll had his team go through a mock game scenario.

The group split into two teams and played some live snaps with players in full pads.

However, even before the scrimmage could begin S Winston Guy got a little overzealous.

Guy drilled and upended WR Stephen Williams on a deep ball near the goalline on a pass from QB Russell Wilson. Williams landed on his neck and remained down on the field for a minute or two. He was tended to by the training staff before finally getting up and walking back off the field.

Williams and Guy exchanged words as Williams was returning to the locker room and had to be separated. Williams remained in the locker room for a short amount of time before returning to practice.

"That was a terrible play that happened," Carroll said. "That should never happen."

The scrimmage itself appeared to be dominated by the defenses. All three offenses seemed to struggle to move the ball consistently against their counterparts.

With a sizable number of players sitting with nagging injuries, some of the rotations were somewhat different than in past practices.

G Rishaw Johnson saw some time with the first-team offensive line. S Jeron Johnson and LB Allen Bradford worked with the first-team defense as S Kam Chancellor and LB Bobby Wagner sat out.

TE Luke Willson made a nice sliding grab in the endzone on a pass from Wilson against the first-team defense. He was back in a standard jersey after wearing a "no-contact" red jersey Thursday with a sore shoulder.

CB Walter Thurmond flew through the offensive line to record a sack of Wilson during the first-team offense's final two-minute drill opportunity.

QB Brady Quinn then led the third-team offense on a field goal drive. He completed two back shoulder throws to WR Phil Bates against CB Byron Maxwell to keep the drive alive and K Steven Hauschka drilled the "game-winning" field goal try through the team's narrow set of uprights, which are roughly half as wide as standard uprights.

WR Sidney Rice has returned from his trip to Switzerland to undergo a procedure to alleviate patellar tendinitis in his knee.

Rice said that the trip took 12 hours of travel each way for a procedure that lasted all of 20 minutes. He said it was "similar" to Platelet-Rich Plasma treatments.

"I’ve been having a sore knee for quite a while now, so I’m just working on it here in the training room, doing a great job in there with the trainers and I’m just going to see where it goes from here," Rice said.

Carroll said Rice should return to the practice field on Sunday.

WR Perez Ashford and TE Andrei Lintz, both added to the Seahawks roster on Thursday, did not participate in the scrimmage.

--Roster Moves

The Seahawks announced they have agreed to terms with former Arizona Cardinals WR Early Doucet and waived/injured DE Kenneth Boatright. Boatright suffered a left arm injury in practice and has been in a sling the past two days.

Also, WR Greg Herd reverts to the Seaahwks injured reserve list after clearing waivers.

Doucet should have a chance to compete for one of the final roster spots at receiver. Four receivers appear to be locks in WR Sidney Rice, WR Golden Tate, WR Doug Baldwin and WR Jermaine Kearse. WR Percy Harvin should begin the season on the physically unable to perform list and won't count against their roster.

Beyond that there is likely one or two spots for receivers with Doucet, WR Stephen Williams, WR Bryan Walters, WR Phil Bates and WR Chris Harper all in the conversation for the spots.

--Injury Updates

Seven players remain on the PUP and NFI lists for Seattle. WR Percy Harvin (hip), DE Chris Clemons (knee), DT Greg Scruggs (knee), CB Tharold Simon (foot), TE Zach Miller (foot) and RB Robert Turbin (foot) remain on the physically unable to perform list. LB Korey Toomer (knee) remains on the non-football injury list.

DE Cliff Avril, CB Ron Parker and TE Darren Fells were sidelined with hamstring strains. T Michael Bowie was back at practice but didn't appear to take part in the team portions of practice.

CB Jeremy Lane (foot), TE Michael Palmer (groin), DT Michael Brooks (undisclosed), LB Kyle Knox (undisclosed) and K Carson Wiggs (undisclosed) did not participate.

WR Doug Baldwin (soreness) and S Kam Chancellor (ankle) also sat out on Friday.