The Twins are moving struggling right-hander Nick Blackburn to the bullpen temporarily. Left-hander Brian Duensing will take his place in the rotation. Acting manager Scott Ullger insisted the move is temporary and made to give Blackburn a mental break. Duensing will start Friday at Baltimore. Twins manager Ron Gardenhire was not at the ballpark, tending to a family matter. "It's not a permanent thing. It's just to give Blackie a chance to take a step back, take a deep breath and regroup a little bit," Ullger said.