Did a search and didn’t really find anything discussing this.
Yesterday in the Robert B Lewis Stakes at Santa Anita, Kid Cantina broke down entering the backstretch and was subsequently euthanized (from the BH article).
The Equibase chart noted that Kid Cantina was vanned off (which is consistent with the BH article IMO).
At the end of the Footnotes, it was noted that Kid Cantina wore calks.
In your (the royal ‘you’ ) can calks increase the risk of a breakdown or was this more of an anecdotal mention in the race footnotes?
Do horses wearing calks have to be declared as such to appear in the morning line odds information?