They may be young, but they're making quick strides towards the top of their game -- the top five, in fact, in North America, based on 2009 wins.

Respiratory health is a significant factor for racehorses -- even moreso than for other performance horses.

There's nothing more troublesome for drivers, horses and officials than the inconvenience of bad weather. For North American racing, however, it's occurence is unavoidable.