The Dallas Cowboys are adding quarterback Mark Sanchez as the backup to rookie Dak Prescott while Tony Romo recovers from a back injury.A person with knowledge of the agreement told The Associated Press on Saturday that Sanchez had agreed to a one-year contract that could be worth $2.5 million with incentives. The person spoke on condition of anonymity because the contract cant be signed until Sunday.Sanchez reached a deal with the Cowboys the same day he was released by Denver as all NFL teams had to get their rosters to the 53-man limit for the regular season. Sanchezs release cleared him to join any team.The six-year veteran was acquired by the Broncos in the offseason after Peyton Manning retired and Brock Osweiler bolted to Houston in free agency. But the 29-year-old Sanchez couldnt beat out second-year pro Trevor Siemian, a seventh-round pick in 2015 from Northwestern.Dallas has to decide whether to place Romo on the injured reserve-return list after he broke a bone in his back in a preseason game at Seattle. Romo would miss the first seven games if hes on that list, and Sanchez could take that roster spot.The Cowboys placed running back Darren McFadden on the non-football injury list, sidelining their leading rusher from last season for at least the first six games. He broke his right elbow during the offseason.The move on McFadden wasnt a surprise because rookie Ezekiel Elliott, the fourth overall pick in the draft, is expected to start the Sept. 11 opener against the New York Giants. Alfred Morris, a two-time Pro Bowl runner who signed as a free agent before the draft, is Elliotts backup.Second-year quarterback Jameill Showers survived the initial round of cuts after a marginal showing in the preseason finale against Houston, but Sanchezs arrival could change his status.The Cowboys said they would be in the market for a veteran quarterback as soon as backup Kellen Moore broke his right ankle in a training camp practice. They didnt make an immediate move, though, and Prescott had strong showings in the first two preseason games.When Romo went out unexpectedly just three plays into the third preseason game against the Seahawks, Prescott came in and led the Cowboys to a touchdown on his first full possession.The fourth-round pick from Mississippi State finished the preseason 39-of-50 passing (78 percent) for 454 yards with five touchdowns and no interceptions. He also ran for two scores.The addition of Sanchez gives Prescott a backup who has made 72 regular-season starts and played in two AFC championship games, with the New York Jets in 2009-10. Moore has already been placed on season-ending injured reserve.Former Texas A&M quarterback Jerrod Johnson, who signed before the preseason finale in case Showers got hurt, was among those waived.Tight end Rico Gathers, who is making the transition from basketball after not playing football since eighth grade, was waived. The former Baylor basketball standout is likely headed to the practice squad if no other team claims him.The Cowboys waived a pair of former fifth-round picks in receiver Devin Street (2014) and defensive end Ryan Russell (2015).Defensive end Mike McAdoo was placed on the waived-injured list despite a strong showing in the preseason finale.Defensive end DeMarcus Lawrence was placed on the reserve-suspended list. He will miss the first four games for violating the NFLs substance-abuse policy.---AP NFL websites: http://pro32.ap.org and http://twitter.com/AP-NFLAuthentic Custom Senators Jersey .25 million option on reliever Jose Veras. Custom Frank Finnigan Jersey . -- Chicago Bears cornerback Tim Jennings was selected Monday to his second straight Pro Bowl, while guard Kyle Long made it after a solid rookie season. http://www.customsenatorsjersey.com/ . -- Charlie Graham stopped 67 shots as the Belleville Bulls edged the visiting Guelph Storm 6-5 on Saturday in Ontario Hockey League action. Senators Jerseys China . The Brazilian goalkeeper signed a loan deal with the Major League Soccer club on Friday as he looks to get playing time ahead of this summers World Cup in his home country. Custom Senators T-shirts . Anthony Calvillo, through 20 CFL seasons, was frequently invincible and largely stoic in the heat of competition. But underneath the professional exterior he was, and is, compellingly human. Texas Tech?quarterback Patrick Mahomes II, on pace to break the NCAA single-season passing record, left Thursday nights 55-19 home win over Kansas?in the third quarter with an injury and did not return.Mahomes landed hard on his throwing shoulder after a 32-yard run when he was tackled by Jayhawks Fish Smithson and Isaiah Bean. Trainers tended to Mahomes on the field. His right shoulder was examined on the sideline, and he left for the locker room as backup Nic Shimonek took over for the Red Raiders.Shimonek finished 15-of-21 for 271 yards and four touchdowns.?Tech coach Kliff Kingsbury said he did not know the severity of Mahomes injury.Wevee got to get him looked at more extensively, Kingsbury said.ddddddddddddThrough three games, Mahomes completed 71.2 percent of his passes for 1,493 yards -- a nation-leading 497.7-yard average. His 14 touchdowns ranked second nationally.Before the injury on Thursday against Kansas, the 6-foot-3, 230-pound junior was 27-of-34 for 277 yards with four touchdowns and one interception while leading Tech to a 27-19 lead. He was sacked three times.Shimonek directed the Red Raiders to scores on his first two possessions. ' ' '