#1 and #18 lost all chance to win because of the (roughly) 4 path drift out of #7. Given the speed favoring nature of the track on Saturday, the interruption to their progress unfairly eliminated them from the race. Had their momentum not been stopped, a legitimate case can be made that either of the two most impacted horses would have won the race. At the very least, the incident cost each horse final position in the race. The winner (#20) was not impacted enough to have supported a DQ, imo.
It was such a monumentally hard call to make for the stewards. I can only imagine the difficulty with which each made his decision. The 2014 Breeders Cup Classic Champion Bayern wasn't disqualified despite having committed an infraction which would have been DQ worthy in a lesser race and, as best as I can recall, on par with what happened yesterday. There's not a doubt in my mind that Maximum Security gets DQ'd if it would have been the third race on the card yesterday at Churchill Downs. Should there be a higher threshold for a DQ in a major race? I think so. Not only does a DQ cast a shadow over the winner, but it does upon this struggling sport as well. The Derby and Breeders Cup are the only days with much public attention anymore. Disqualifications risk reducing the present level of support.
Another factor is that the Derby has a 20 horse field. Incidents are almost always going to occur that would warrant DQs in lesser races with smaller fields. A 20 horse field is a cluster blank and if the exact same standards are held to these races as those with fields much smaller, DQs would become a fairly usual situation which would not do the sport and the public much good. Clearly a higher standard for DQ must be in place for these races. Was that standard met yesterday? I don't know. Had I been a decision maker (steward) on this infraction, it would have been a brutally difficulty call for me. I honestly don't know what I would have done. The fact that the interference was not imo a result of negligence on the part of Jockey Luis Saez would have me leaning against the DQ, but as I've posted, I still don't know what I would have done.