FRISCO, Texas -- The Cowboys have signed Mark Sanchez as a backup quarterback and are keeping their options open with the injured Tony Romo.Dallas added Sanchez to the 53-man roster on a one-year contract Sunday while waiving Jameill Showers with the likely intention of adding the second-year player to the practice squad if another team doesnt claim him.Rookie Dak Prescott is set to start the opener Sept. 11 against the New York Giants, but the key to the quarterback puzzle remains Romo, who broke a bone in his back in a preseason game against Seattle.The Cowboys can put him on the injured reserve-return list, which would free up a roster while sidelining the 36-year-old for the first seven games.Thats an ominous number for Dallas because its how many games Romo missed after he broke his left collarbone the first time last season. The Cowboys lost all seven games before Romo broke the same collarbone and missed four more. Dallas finished last in the NFC East at 4-12 a year after winning the division.If Dallas decides to keep Romo on the active roster, he can return whenever hes ready. The Cowboys havent said how long he will be out following his fourth back injury in less than four years.Prescott had a strong start to the preseason after Kellen Moore broke his right ankle in practice at training camp, and the Cowboys ultimately decided to give their fourth-round pick the backup job.After holding off on adding a veteran following Moores injury, the Cowboys knew they would have to add one once Romo got hurt.Showers, who spent most of last season on the practice squad, was spotty in his best shot at an audition while playing the entire preseason finale against Houston. But he has versatility because of his work on special teams in practice last season, making him an attractive option for another year in a similar role.Tight end Rico Gathers, the former Baylor basketball player trying to make the transition to football, was among seven players who cleared waivers and were added the practice squad.Defensive end Ryan Russell and receiver Vince Mayle, both second-year players, made the practice squad. So did four rookies: center Jake Brendel, receiver Andy Jones, linebacker Deon King and tight end Austin Traylor.---AP NFL website: www.pro32.ap.org and www.twitter.com/AP-NFLDomata Peko Sr. Jersey . Wilson hit Schenn from behind during Tuesday nights game in Philadelphia, earning a five-minute major for charging and a game misconduct. He has a phone hearing with the department of player safety, which limits any potential suspension to five or fewer games. Haloti Ngata Jersey . Defenceman Yannick Weber scored the go-ahead goal early in the third period and the Canucks breathed a sigh of relief with a 2-1 win on Saturday night. http://www.customravensjersey.com/custom-michael-jackson-jersey-large-843d.html . Inter president Erick Thohir says in a club statement on Wednesday that Vidic is "one of the worlds best defenders and his qualities, international pedigree, and charisma will be an asset. Marshal Yanda Jersey . Just as Montreal was settling into the first full working week of a new year, the Impact announced the appointment of their new head coach. L.J. Fort Jersey . PAUL, Minn.Leeds head coach Steve Evans admits he is flattered to be linked with the vacant managerial position at Celtic, but insists he remains totally focused on his job at Elland Road. Celtic boss Ronny Deila announced on Wednesday he would be leaving at the end of the season after almost two years in the job.David Moyes, Neil Lennon and Roy Keane were immediately installed as front-runners for the post by bookmakers but backing for Glasgow-born Evans was noted throughout the day. Speaking at his news briefing ahead of Saturdays Sky Bet Championship trip to Hull, Evans, a lifelong Celtic fan, was asked if replacing Deila in the Parkhead hot seat was something he considered.I think it is flattering for any manager or head coach to be linked with any job, said the former Crawley and Rotherham boss.But you cant let it take any focus away from the job in hand. Our only focus is Hull City on Saturday and when we are finished with Hull, it will be Charlton. Deila stepping down from Celtic post at the end of the season Ive been a Celtic fan since I was two seconds old. Ill always be a Celtic fan. Celtic is an iconic football club but Leeds United is an iconic football club, so my real focus and only focus is representing this famous club.If I was offeredd a contract here at Leeds in the summer and Celtic wanted me, I would say no to Celtic.dddddddddddd Ive made no secret of the fact I want to be head coach at Leeds next season.The only job that appeals to me at the minute is being head coach of Leeds United and I wont get involved in any speculation about what may or may not be.I have had a remit here from the start of the season to make sure this club is not in a relegation fight with three or four games to go and with three games to go we have a real opportunity of being comfortably in the top 10. Moyes heads betting lists to replace Deila at Celtic Park But there is a lot of hard work to be done before then. We have to deal with Hull City, Charlton and Preston and that is the only focus.Former Everton manager Moyes, who labelled Celtic as one of the biggest clubs in the world, heads bookmakers lists ahead of ex-Hoops boss Lennon, who has already said he would be keen to return to the post, and Keane, who is looking for a return to club management. Also See: Leeds see off late Wolves surge Evans confident Cook will stay Leeds Utd video Leeds Utd fixtures ' ' '