SANTA CLARA, Calif. -- San Francisco 49ers cornerback Jimmie Ward is week-to-week with a quad strain, the team announced Tuesday. He left Sundays loss to the Seahawks with the non-contact injury after covering a kickoff in the second quarter.That likely leaves coordinator Jim ONeil to find a replacement for one of the most valuable members of his secondary in time for a visit from Dez Bryant and the Dallas Cowboys eighth-ranked offense Sunday.Ward, the teams first-round draft pick in 2014, was off to a promising start to his third season after transitioning to cornerback full-time. He played slot cornerback and safety during his first two years.Third-year player Keith Reaser and rookie Rashard Robinson are competing to replace Ward should he miss Sundays game, ONeil said. The decision will come down to which player performs better in practice.It keeps you on your toes, Reaser said. You know every practice counts, every play matters, almost as if its training camp or a game.ONeil said, Neither one of those guys has won the job outright. So if they want it to be week-to-week every week, thats on them. If somebody wants to establish themselves ... then go do that. Im all for it.Reaser was drafted in the fifth round in 2014 out of Florida Atlantic. He spent his rookie season sidelined while recovering from an anterior cruciate ligament tear in his knee. He made his pro debut last season before getting the third-most snaps among 49ers cornerbacks in 2016.Missing his rookie year helped Reaser prepare mentally for his chance at playing time.Everybody has a different path in this business, Reaser said. You just try to learn as much as you can and go from there.Robinson, a fourth-round draft pick from Louisiana State, joined the NFL facing questions about a checkered college career and an arrest in connection with a robbery, which was later expunged from his record. He elected to enter the NFL draft instead of transferring to a new school after being kicked off LSUs team.Robinson has a chance to start Sunday against a quarterback he faced in college, Dak Prescott, who played at Southeastern Conference rival Mississippi State. The 49ers drafted Robinson 133rd overall, two spots before the Cowboys took Prescott.The one thing I remember from him at Mississippi State is he was pretty mobile, Robinson said. Just got to out there, just contain him.The 49ers signed receiver and return man Keshawn Martin on Tuesday. He played last season with the New England Patriots. He spent his first three years with the Houston Texans after being drafted in the fourth round from Michigan State.Martin becomes the sixth receiver on San Franciscos active roster. He took the roster spot vacated by Anthony Davis, who announced his retirement Monday. It was the second time Davis retired since June 2015. His first retirement was spurred by a concussion he suffered in 2014.Davis rejoined the 49ers at the starting of training camp after his one-year hiatus. He sustained a concussion before the Week 2 loss to the Carolina Panthers which kept him from playing before his retirement was made official. Wholesale NCAA Jerseys . -- Aldon Smith believes he is on the path to being sober for good. Clearance College Jerseys Online . The scientists believe the small earthquake during a Marshawn Lynch touchdown was likely greater than Lynchs famous "beast quake" touchdown run three years ago, which also came against New Orleans during a playoff game. http://www.jerseysncaacheap.com/ . The Barrie Colts defenceman, who impressed many with his play for Canada at the World Junior Hockey Championship, is the top-ranked skater in the February rankings. He has 19 goals and 24 assists for 43 points in 45 games with the Colts this season. 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Edwards pleaded guilty to misdemeanor careless driving on Aug. 30, and the St. Paul Pioneer Press first published the news of Edwards incident on Tuesday, the same day practice squad guard Isame Faciane was released for a misdemeanor DWI charge during the teams bye week.The Vikings were criticized in some circles for dealing differently with their defensive coordinator than they did the guard. But Zimmer said the difference in punishment was because of how differently Edwards and Faciane handled their respective DWIs, not because of the differences in their standing within the organization.Every situation is different, and I dont really care about being consistent; I care about being right, Zimmer said. When this happened with George, George was given a lot of things to do, including a huge monetary commitment that he had to make, and he fulfilled all his obligations. This last situation [with Faciane], I told the players in the meetting the day they left to make sure they stay out of trouble, do the right things.dddddddddddd I told them again [on] the field when they left. I had the coaches text them and make sure to remind them to stay out of trouble. Then, when this did happen, on the very same day, he was told to call me twice and did not call me.So every situation is different, and I like Isame. If he fulfills his obligations, Im not opposed to bringing him back, as well.Asked if Edwards future was in doubt beyond this season, Zimmer said, Well, if he messes up again, his future will be [in doubt]. But right now, hes fulfilled all his commitments.Edwards blood alcohol content was 0.11 at the time of his arrest, over Minnesotas legal limit of 0.08. He was fined $1,000 and placed on a one-year probation after pleading guilty, and the Vikings said in a Tuesday statement that Edwards notified the organization immediately after his arrest.Faciane, whose blood alcohol content was 0.13 when he arrested in St. Louis Park, Minnesota, last Wednesday, was charged with fourth-degree DWI, driving without a valid license and operating a motor vehicle with a blood alcohol content over the states legal limit. ' ' '