Most teams put their best defender at SS, not 3B. Henderson is the most talented infielder on the team. 2B is probably the best spot for Holliday. The Orioles may or may not be comfortable with Mayos defense at 3B. Pretty sure they are comfortable with Westburg and Urias over there. Teams don't generally rearrange their best middle infield defense so they can put their best guy at 3B.