Pitchers develop endurance over time. It isnt a one season thing and it rarely is something you are drafted with. If that was the case, then people wouldnt be freaking out about pitch counts and innings counts. Joba has a good pitchers frame. He might not be that tall, but he is wide as the day is long, which should give him good torque without killing his shoulder. But I honestly think the yankees took the right approach with him and dialed him back a little bit from the getgo. We saw last yr that he has the capability to throw mid to high 90s as a starter, but he doesnt have the endurance at this time to do it full time. He showed in game 1 of the sox series that he could reach that point if he needs it, but he doesnt always need it. That being said, people keep forgetting that Joba is truly new to the whole starting pitching full time thing. He was at a Juco, then went to Nebraska where injury woes limited his innings totals. Then he went to Tampa where a hamstring injury sidelined him for the first few weeks, then he throws something like 100 innings as a starter before being converted to the pen. Last yr, he starts in the pen, gets moved to the rotation, gets hurt and then gets converted back to the pen. This has really been the only yr that he has been healthy and starting the whole time. And is had been a really good yr for him until the end of July when the wheels started coming off. Long term, he has a good amount of work to do, but this has been a positive yr for him. He still needs kid gloves, but they can get a little looser for 2010. If the kid gloves work and he stays healthy, he is gonna be one of the best pitchers in the game within the next 3 yrs. If he doesnt, then this starting thing was a waste and the pen is where he belongs.
Now, the reason why I think this can work is tied into Hughes and the kids in the bullpen. Hughes this yr made the burden on the pen minimal. But when Hughes comes back to the rotation, there will be a hole to fill. It will start with Melancon and Robertson. Aceves slots into the Mendoza role, Coke into the lefty role and Marte hopefully into a quasi-setup role if his arm holds up. But either Melancon or Robertson need to take the next step and become setup quality arms. If they do, then nobody will be clamoring for Hughes or Joba to come back to the pen. If they dont, then expect the cries to be deafening.
In terms of Buchholz, I agree with the fastball command issue. But if you dont have a pitch behind that fastball that you can count on regularly, then you wont be much of a starter. When he was up in 2008, he was really a 2 pitch pitcher with the fastball and the curve. And if the curve wasnt on, he was easy to figure out. Sit dead red, take the off speed crap and lay into him. But now with that changeup, you cant do that. That makes the hitter respect the heater and allows him to throw it more often. It must look exactly like a heater out of the hand, cause the hitters look lost when he throws it.