[RKBUmp]

ASA is posession and control, the rules supplement pretty much just repeats exactly what the rule states but gives a definition of exactly what "control" means. It is pretty specific that a ball between the legs or under the arm is not considered to be control of the ball.

Based on your description the runner has been coached very well and knows exactly what the rule states. Under ASA you do not have a lookback violation and your situations b and c mean nothing other than b would turn the lookback rule back on and reset the 1 stop and reversal of direction. Now, under any other rule set I am aware of they only require posession of the ball by the pitcher. In other rule sets you have a lookback violation immediatly when the runner leaves the base and again your situations b and c mean nothing.