Second baseman Todd Walker strained his right knee running the bases in the first inning and was taken to a hospital. Walker was rounding second on Derrek Lee's double off the wall in center when he slowed and began limping and grimacing. He made it to third and then put his hands down and fell, clutching his right leg. He was on the ground for several minutes while trainers tested the knee. He was helped off the field and taken to Northwestern Memorial Hospital for an MRI.