I am thinking Rice too. He is the #1 back in Baltimore to start the season. McGahee will get some carries too, but Rice will probably get close to 15 carries along with 3-5 receptions too. He is determined to have a breakout season this year and the matchup against KC at home is a good way to start. He could be the next big thing this year if Baltimore allows him to be.
Apparently I'm the lone dissenter here, but I would definitely start Leon Washington. I think he is gonna be a stud this year, a poor man's Brian Westbrook. The coaching staff has made a point of saying they will get him the ball more this season, and they have already shown this in the preseason.