On a relatively good day for the United States and for China track remained the lone standout of the events going on. It was a busy day as all of the relays for the 100 meter and the 400 meter events took place that day and the United States did have a rough day on the relay handoffs.
It started out with the United States dropping the womens baton in the 4x100 meter event and on the mens side going from the third spot to the anchor leg of the relay. In the womens the fault went to Alyson Felix who cupped her hand while trying to get the baton handed off as in the mens it was not Tyson Gay's but the third man on the relay.
Overall it was an exciting night and all that is left is the finals for some minor sports and the marathon, triathalons and the heptathalon.