Thorooughbred Times Article:
http://www.thoroughbredtimes.com/tod...42703&subsec=2
Quoting:
While racing for the lead three wide under jockey Jerry Bailey past the grandstand for the first time, Peace Rules appeared to drift in front of Saint Liam in his attempt to settle in along the rail, causing Saint Liam to check up briefly to avoid clipping heels and brush into Sir Cherokee to his outside.
The resulting contact knocked Sir Cherokee sharply off stride and launched him hard into Ten Most Wanted and jockey Pat Day, forcing Ten Most Wanted to veer to the extreme outside in an incident eerily similar to the Breeders’ Cup Classic (G1) on October 25....
There is also a description of the stretch drive contact.