You would think he could, but that's not even a guarantee, given the fact that he hasn't started much in several years now and was really bad when he did. I have to think the Cubs are thinking they did such a great job transforming Marquis from a crappy starter to a servicable one that it'll be just as easy with Dempster. Of course, Dempster actually has a worse history than Marquis with starting and has the whole "stretching out his arm" issue to work with. Plus, the shine may be coming off the Marquis experiment with his 7+ ERA in the past week and unimpressive peripherals for the season as a whole. if you are looking for guarantee's then you are rooting for the wrong sport. Baseball has something along the lines of guarantees, if not just great bets. There are some guys you can be pretty certain will be better starters than Miller, ie Guzman. Most guys should be able to be better starters than Miller, but Dempster has been just as bad at times and hasn't started effectively in years.