Michael left Seahawks practice with an injured shoulder on Sunday, according to ProFootballTalk. Seahawks head coach Pete Carroll downplayed the severity of the injury, telling reporters "[Michael] just banged his shoulder a little bit," and saying he believes Michael will return to practice on Tuesday. With Seahawks RB Marshawn Lynch holding out over a contract dispute, Michael has been taking reps with the offensive starters.
This is definitely a scare for the Seahawks, but it sounds as though Michael is going to be ok. His presence on the team is likely a big bargaining chip in Lynch's on-going holdout, and the Seahawks will want him fresh and ready for the season even if Lynch returns to the team. Many analysts are predicting that this will be the year that Michael overtakes Lynch as the dominant back in Seattle. Lynch is currently being drafted 12th among running backs, and Michael is being taken 28th. Any serious injury to Michael would solidify Lynch's value, assuming he's reported to the team when the season starts.