Since joining the Redskins two weeks ago, running back Tashard Choice has done a lot of talking but no playing. He hopes that changes Sunday against Dallas, the team that drafted him and then waived him earlier this month.Choice had 28 carries for 75 yards for the Cowboys this year before his exit.I think as much as anything, it had a lot to do with the emergence of the young backs weve had, Cowboys coach Jason Garrett said. Tashard has been a really good player for us the past few years, but he was banged up. He was banged up in training camp and banged up at different points during the season.We just felt like wed love to still have Tashard, but with the emergence of DeMarco Murray and Phillip Tanner and how theyre going to play on special teams, it was a move we could make.Choice has missed his first two games with the Redskins because of a hamstring injury but was listed as full-go during Wednesdays practice.You always want to play a guy when hes ready, Redskins coach Mike Shanahan said. He has to be physically ready and mentally ready. I think hes feeling pretty good about himself right now.