Carlos Quentin missed a second straight start Saturday night due to a sore right knee. He's now sat out three of the last five games because of the knee, which he had surgically repaired during spring training. It's not clear whether Quentin will play Sunday, but the Padres aren't concerned. "We have to let it quiet down," said manager Bud Black. "But it is not a big concern on the part of our doctors and medical staff."