ALLEN PARK, Mich. Ryo Miyaichi Arsenal Jersey . -- Detroit Lions coach Jim Schwartz guardedly spoke about the ways in which Ronnie Brown would help his running back depleted team and how the veteran would be able to quickly get up to speed. Then, Schwartz stopped himself -- perhaps too late. "If I talk too much, somebody is going to find something wrong with an X-ray," he said Wednesday. Looks as if thats what happened. Detroits trade with the Philadelphia Eagles that exchanged seldom-used running backs -- Brown and Jerome Harrison -- has been voided. Lions spokesman Bill Keenist said the team would have no further comment. The Eagles announced Tuesday they dealt Brown to Detroit for Harrison and an undisclosed pick in the 2013 draft. Detroit wouldnt confirm the move because the franchise doesnt until deals are done. The Lions were looking forward to adding Brown to a backfield that might be without starting running back Jahvid Best for a while. He had his third concussion Sunday in a loss to San Francisco. Best walked across Detroits locker room, trying to avoid eye contact and conversation. The running back did slow down slightly, but wouldnt or couldnt answer whether hell play Sunday against Atlanta. "I have no idea," Best said Wednesday after missing practice because of the concussion. Unfortunately for Best and the Lions, timetables are elusive when it comes to concussions, and he says this one is his third. He had one in the second preseason game this year and another in 2009, his final season at California when a spectacular fall sent him to the hospital with a concussion and sore back. Best was knocked out of Sundays loss against San Francisco. "He had a hard time with some of the lights after the game," Schwartz said. "Those are signs that youve got to be concerned about and you have to be objective about. Well have a whole protocol that he has to go through to get back on the field. "Coming back from a concussion isnt like coming back from a sprained ankle or a bad shoulder or a pulled hamstring. Some of those things you can tough out. You cant tough out a concussion." Detroit linebacker Justin Durant and tight end Tony Scheffler missed the game against the 49ers, recovering from concussions of their own, and also didnt practise Wednesday. With Best out, the Lions (5-1) were sounded as if they were ready to plug Brown into the lineup Sunday against the Falcons (3-3) despite not being able to put him on the practice field Wednesday. The Lions are left with a rotation of Maurice Morris and Keiland Williams against Atlanta and Schwartz said he likes "a lot" about both. "Maurice has answered the bell any time its been run for him," Schwartz said. "Keiland has shown some really nice things." Detroits depth in the backfield took a hit during the preseason when rookie running back Mikel Leshoure had a season-ending injury. The team signed running back James Davis to the practice team, released tight end Nathan Overbay from the practice squad, and Davis might have a chance to quickly get activated to give Detroit a third running back against Atlanta. Best, in his second season out of Cal, has played in all six games this season, rushing 84 times for 390 yards at 4.6 yards per carry and two touchdowns without a fumble. He also has 27 catches for 287 yards and a score. Cheap Indianapolis Colts Jerseys . By the time the right-hander was lifted after the sixth, he really had impressed his manager. Cheap Jerseys From China . -- Orlando forward Glen Davis has been suspended for two games by the Magic for conduct detrimental to the team. http://www.cheapjerseysfromchinastore.us/ .S. Open final. "My emotions did get the best of me this past weekend when I disagreed with the umpire," Williams tweeted Wednesday. Randall Cobb Jersey . The Canadiens announced Thursday that the veteran defenceman has signed a US$17.25-million, three-year deal with the club that will see Markov in a Montreal uniform through the 2013-14 season. cheap jerseys . The Vancouver Canucks made themselves better this year by improving their defence and adding depth on their third line.TORONTO -- It will be up to Canadian Ivan (Pride of El Salvador) Menjivar to end bantamweight Renan Baraos 31-fight unbeaten streak. The 135-pounder from Montreal will face the Brazilian at UFC 148, stepping in for Jeff (Hellbound) Hougland at UFC 148 on July 7 in Las Vegas. Hougland has been shifted to a televised May 15 card in Fairfax, Va., replacing the injured Mike Easton. Hougland will face Montreals Yves (Tiger) Jabouin. The UFC says the outcome of the Barao-Menjivar bout "could cement the next challenger" for the bantamweight title-holder Dominick Cruz. Montreals Menjivar (24-8) haas won his last three UFC bouts. Thomas Vermaelen Jersey. Barao (30-1 with one no contest) has also won his last three. In other UFC 148 news, Brazils Demian Maia will drop to welterweight to face South Korean Dong Hyun (Stun Gun) Kim and middleweight Riki Fukuda will face Costa Philippou. Other fights on the card include Tito (The Peoples Champ) Ortiz against Forrest Griffin in a battle of former light-heavyweight champions and former UFC middleweight title-holder Rich Franklin against Strikeforce champion Cung Le. Middleweight Tim (The Barbarian) Boetsch meets Englands Michael (The Count) Bisping. ' ' '