The cyclist insisted that he had a "saddle sore".

The horse is also Triple Crown nominated.
Here is the passage I find interesting, in that Pletcher as notified of the failed test & requested the "B" sample to be tested.
His attorney stated that "they were just notified" , and are requesting a "B" sample now.


"Additionally, if a regulatory body notifies the connections of any horse nominated for the Triple Crown or Kentucky Derby that earned points in a Road to the Kentucky Derby race of a positive drug test or other medication violation that could result in disqualification from the Road to the Kentucky Derby race, any points from that race will be revoked until and unless it is determined that no violation occurred through a final regulatory or judicial determination prior to the running of the Kentucky Derby. Connections of any horse nominated for the Triple Crown or Kentucky Derby must promptly notify CDRT upon learning of any positive drug test or medication violation whether the violation occurred (i) in a Road to the Kentucky Derby race or not, or (ii) prior to or following submission of this nomination form. Failure to provide prompt notification shall result in revocation of points or eligibility for the Kentucky Derby."
https://www.thetriplecrown.com/terms.html