One question that I have about the at-large bids. It seems that everyone(almost) has how they qualified in the far right hand side (AQ, R1-3, etc). But a very few runners have blank spaces in that spot. Dickens in the 400, Hanlon in the 5000 and Low in the Pole Vault.
Did these runners have special circumstances that allowed them to qualify for the meet or what happened for them to get in?