Any runner is out when --
(a) (1) He runs more than three feet away from his baseline to avoid being tagged unless his action is to avoid interference with a fielder fielding a batted ball. A runner’s baseline is established when the tag attempt occurs and is a straight line from the runner to the base he is attempting to reach safely; or (2) after touching first base, he leaves the baseline, obviously abandoning his effort to touch the next base;
I cannot understand how the runner is allowed to establish a baseline away from the direct path to the next base, and in this case to create contact with the fielder.