Running back Ladell Betts and safety LaRon Landry are back practicing with the Washington Redskins.  On the flip side, offensive linemen Todd Wade and Stephon Heyer will miss at least two weeks each with injuries.  Running back Marcus Mason is trying his best to land a spot with the Burgundy and Gold.  He had 98 yards on the ground in Sunday night’s win over the Indianapolis Colts and teamed well with Rock Cartwright toting the ball.  Head coach Jim Zorn calls Mason a workhorse who wanted more in the Hall of Fame Game.  Saturday evening, Washington has its first home game of the preseason against the Buffalo Bills.