What are “naps” in horse racing?

While racehorses nap (sleep) in their stalls, the term nap in horse racing refers to a public handicapper’s best bet of the day.

The abbreviation “nb” stands for next best and is often used to designate the handicapper or tipster’s second-best bet of the day.

Both terms are mainly used in the U.K. and Australia, as far as I can tell, and chances are you will never hear either term if you are a U.S. horseplayer.

You can wager on horse races online in these U.S. states: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Mexico, New York, New Jersey, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming