Yankees right-hander Mark Prior pitched on consecutive days for the first time as he tries to convert to a reliever. He threw a scoreless inning Sunday for Class-A Tampa against Lakeland. He walked one during his 20-pitch outing. On Saturday night, he had a strikeout in shutout inning against Detroit's Class-A team. "That's when the secondary pitches come into play," Prior said. "It was a step forward. My arm feels fine."