ST. LOUIS -- When Clayton Kershaw walked off the mound in Game 1 of this National League Division Series, he looked as shell-shocked as he had appeared on Oct. 18 of last season at Busch Stadium when the St. Louis Cardinals were hitting his pitches, at times, as if he were throwing them batting practice.Kershaw isn't one to retreat immediately to the clubhouse when he is pulled. So he sat there on the bench, head down, shaggy mane dripping with sweat on a hot evening, his arm wrapped in a towel.