[Rich Ives]

Originally Posted by MikeStrybel

Sure there is. On this ground ball play, the runner will be almost always running through the base, not looking to go to second. On a wide throw (as opposed to an inside throw), the fielder may be taken into a place where his momentum causes a collison with B/R after he has gained the base safely. The latter was not impeded on a ball that is caught. As has been suggested, if the throw had sailed high and wide (or skipped by), and the runner would have likely had an opportunity to advance, you could have OBS.

I once had a play involving just such a throw. The right handed first baseman lunged towards right for the throw from third and caught it just above his shoulders. He windmilled his arm backwards and caught the B/R squarely in the face a half step past the bag. B/R went down in a heap, covered in blood from a broken nose. After the player was removed, his HC wanted to know if his new base runner was going to get 2nd. He did not since there was no OBS. The HC smiled, knowing that he had tried, as he walked away.

You're ALWAYS looking to go to second - if you're doing it properly.

When running through the base you look to the right to see if the ball got past F3 or to pick up a "go" from the 1B coach.