Early indications suggested that the team may look to keep Torain instead of Keiland Williams but chose to part with Torain despite the posistive reports earlier in camp. The fact that the team cut Parker comes as no surprise. He has been rumored to be cut since his arrival with the Redskins.
All signs point to Portis being the teams No. 1 running back but there will definitely be a time-share with Johnson and Williams. Mike Shanahan has a history of using at least three backs throughout the season.
Portis has also been a featured back for the Redskins and has had over 300 carries four of the last six years which is a considerable amount of mileage for a running back nowadays. Portis is also coming off an injury that cost him half of last season so you can expect Shanahan to limit his use this season.