Ortiz's running path is established when the fielder first tries to tag him. At that point Ortiz was on the very edge of the infield grass in fair ground. So his running path was a straight line from that point to the bag. He avoided the tag by going right with his foot landing on the runner's line in foul territory. I believe that line is 3 feet from the foul line. Which means he went more than 3 feet to the right to avoid the tag. That was probably the correct call.