GLENDALE, Ariz. >> The Dodgers don't have a lot of natural shortstops in camp. The one at the top of their depth chart is Corey Seager, the consensus top prospect in baseball.So Saturday's news that Seager has a mild sprain in his left knee hit the Dodgers a little harder than usual. Seager, 21, will not participate in baseball activities 1-2 weeks.