Weird and wonderful US racing rules

US racing is a complicated beast with various different rules to those that punters in the UK will be used to. Coupled horses, purse money only runners, and frivolous disqualifications to name but a few major oddities.

Although the basics are standardised across the country; to make it even more fun each state/region has their own Racing Association and therefore their own books of rules, regs and smallprint!

Here's a wonderful little titbit from Kentucky Racing Association (Churchill Downs, Keeneland, Turfway Park etc) which I'd love to see in action one day:
        Section 10(4) The starter may, in his or her discretion, place an unruly or fractious horse on the outside of the starting gate and one (1) length behind the starting line.