If Roy Oswalt's extended spring training start on Saturday goes well, his next outing will come at Double-A Tulsa. Oswalt threw 64 pitches in an extended spring game Tuesday and reportedly showed better command than he did in his first start. The veteran righty has been sitting in the low-90s with his fastball. As long as things progress on schedule, he should join the Rockies' rotation late this month or early June.