New York Yankees left-hander Nestor Cortes expressed disappointment after being moved to the bullpen for Saturday's 2-0 win over the Chicago Cubs, despite delivering 4 1/3 no-hit innings in relief. Cortes, who has been a key starter for the Yankees, described himself as the 'workhorse' of the rotation and was surprised by the demotion. Manager Aaron Boone praised Cortes' professionalism and indicated that the move was temporary, with Cortes expected to return to the starting rotation against the Boston Red Sox next week. Despite his frustration, Cortes affirmed his commitment to the team and willingness to accept any role. The Yankees, fighting for the AL East title, used the move to manage their six-man rotation as Clarke Schmidt and Luis Gil came off the injured list.