![High drama in Epsom opener as William Buick struck in head by rival horse](/img/di/high-drama-in-epsom-opener-as-william-buick-struck-in-head-by-rival-horse-2.jpg)
High drama in Epsom opener as William Buick struck in head by rival horse
Approachability (left) hits jockey William Buick in the head in the stalls
There was a dramatic start to Derby day when "a very bad mistake" meant William Buick's horse ran without him after a rival runner in the next stall struck him in the head.
The championship-chasing rider, who bids for a second Derby triumph on Nations Pride, was on board…