TEMPE, Ariz. -- A blood test Thursday revealed that Arizona Cardinals wide receiver John Brown carries the sickle-cell trait and has been listed as doubtful for Sundays game, coach Bruce Arians said Friday.Brown experienced leg pain before Monday nights win over the New York Jets and was diagnosed with sore hamstrings after the game. But an MRI this week didnt reveal any issues with his hamstrings, which led to the blood test.Were investigating on how to help him get better as fast as possible, Arians said.According to the Centers for Disease Control and Prevention, sickle-cell trait is the result of one inherited sickle-cell gene and one normal gene. Those with the sickle-cell trait usually dont exhibit symptoms of sickle-cell disease. In rare cases, however, people with SCT might experience complications of SCD, such as pain crises.According to the CDCs website, those with sickle-cell trait are more likely to experience muscle breakdown when doing intense exercise than those who dont have the trait.Brown was plagued with hamstring issues for the last 2? months of last season, which Arians said is likely related to the sickle-cell trait diagnosis.Arians thinks Brown is relieved to discover a potential reason for this pain.I think hes very happy that he found out why his legs are hurting so bad, Arians said. LeSean McCoy Jersey . Kuznetsov, who was selected by the Capitals in the first round of the 2010 NHL Entry Draft, has been playing for his hometown team Chelyabinsk Traktor of the KHL. 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TEMPE, Ariz. -- Carson Palmer is spending a lot of time on his back these days, on the green grass (or fake grass) behind the Arizona line of scrimmage.The Cardinals quarterback is trying to operate behind a patchwork offensive line and the results have sometimes been brutal.Continuity is always included as a crucial element to a strong offensive line. That was the case last season, when the Cardinals went 13-3.Looking back to last year, I think we got through most of the year with the same guys, Palmer said Wednesday. This year, its been the exact opposite. Its been different guys, different spots, different weeks, but thats the game.Last week in Atlanta, the line included two players who werent starters when the season began and a third who switched positions. Only left guard Mike Iupati and center A.J. Shipley are playing in the same spots.The line issues arent the only reason the Cardinals are 4-6-2, but they are a major contributor.The line was a problem at times last season and general manager Steve Keim thought he was taking steps to improve it.D.J. Humphries, the teams first-round draft pick a year ago, didnt play a down as a rookie but was installed at right tackle to start this season.The Cardinals signed Evan Mathis to play right guard and tutor Humphries. Shipley replaced Lyle Sendlein at center. The left side was set with Iupati at guard and Jared Veldheer at tackle.First, Mathis was lost for the season with an ankle injury. Then Iupati was out for a time with an ankle problem. Veldheer went on injured reserve with torn triceps.So enter John Wetzel, who had bounced around a few practice squads but never had played in an NFL game until he started at left tackle following Veldheers injury. Iupati returned and Earl Watford filled in at right guard.But Watford has been benched in the latest shakeup. Wetzel was moved to right guard, Humphries shifted to left tackle and Urlicek John was brought in to play right tackle.The 6-foot-5, 307-pound John was signed off of the Miami practice squad when Mathis was hurt in early October. A seveenth-round draft pick of Indianapolis out of Georgia State in 2014, his only was experience on an active roster before this year was two games in Miami last season.ddddddddddddHumphries has emerged as a bright spot. Called out publicly for his lack of maturity and effort early last season, the big lineman has developed nicely, Arians said. The switch to left tackle has been smooth, the coach said, because thats where Humphries played in college.I couldnt ask for any more out of him, Arians said. Hes run blocking extremely well, at a very high level. Hes had some ups and downs in pass protection, but overall very few mental errors and always gives a ton of effort.Humphries, Iupati, Shipley, Wetzel and John are not exactly a murderers row.But thats the lineup the Cardinals will again go with when they are home against Washington on Sunday.I expect them to play a full game like we played the first three quarters (against the Falcons), and hopefully not get in a position where were down two scores and have to throw it every down, Arians said.Fatigue was a problem late.Arians said Wetzel and John can avoid getting worn out by getting in shape.These guys havent played 60, 70 plays in a long time, he said.Arians thought the teams run blocking was good and the pass blocking mostly adequate, until late in the game.Still, Palmer was knocked around a lot the whole day. He was only sacked twice but was hit 10 times.Palmer, who turns 37 in four weeks, was asked if those poundings might be a factor when he makes his decision to retire.I dont know. Ill have to let you know, he said, adding dryly IF I get there.Game notes Palmer and Larry Fitzgerald didnt practice as a scheduled veterans day off. ... CB Patrick Peterson (knee), cornerback Justin Bethel (foot, knee), WR John Brown (illness) and TE Jermaine Gresham (illness) also did not practice.---For more NFL coverage: http://www.pro32.ap.org and http://www.twitter.com/AP-NFL. Cheap Jerseys China NFL Jerseys China NFL Jerseys Wholesale Discount Basketball Jerseys Cheap NHL Jerseys Authentic Cheap Baseball Jerseys Free Shipping Cheapest College Jerseys Sale Cheap Football Jerseys China Nike NFL Jerseys Canada Wholesale NHL Jerseys From China MLB Jerseys Outlet Canada Wholesale NBA Jerseys Canada Store Cheap Soccer Jerseys China Cheap Authentic Jerseys Canada ' ' '