So, last night, Ramon Flores is on second base. First and third are unoccupied. There are no outs. The Giants are playing up the middle (Brian and Bill called it a shift, but it looked more like "shading" to me), so the shortstop is between Flores (post-lead) and second base. Pressley, pinch-hitting, hits a ground ball up the middle (behind Flores). Flores runs. The shortstop fields, spins, throws to third, and Flores is toast. I have two questions arising from this: 1) In that situation, isn't it better for Flores to retreat to the bag, screening the shortstop and maybe being hit by the ball (after all, if he's struck while standing on the bag, he's not out, right?)? This would obviously take some quick thinking, but if the fielders are shading up the middle, it might help Pressley reach. 2) Are there other situations where baserunning strategy should or could be optimized based on where the fielders are initially positioned? I can see, for example, a second and third scenario where the runner on second retreats to the bag on a ground ball up the middle too, making any throw home or to first really tricky. Not sure it makes much difference in the end, but I was thinking about it.