Possession in Obstruction

[BaBa Booey]

If he is bobbling the ball, that to me is still in the act of fielding the ball. The example listed above has the fielder without the ball and then gets in the runner's way (same as a fielder booting a ground ball, after he boots it the runner no longer needs to avoid the fielder). If F5 dropped the ball to the ground and got in the runners way while trying to pick it up and tag him, you could rule OBS.

IN FLIGHT describes a batted, thrown, or pitched ball which has not yet touched the ground or some object other than a fielder. So technically, the ball is still in flight and therefore the fielder can be considered in the act of fielding.