It's known as the most exciting two minutes in sports, horse racing's premier event.

But today's Kentucky Deby could be a muddy mess.

It's been raining off and on throughout the day, and the rain has made for sloppy conditions on the track.

Saturday's 20-horse field lacks a dominant runner. Races this past winter did not establish a clear favorite.

"Classic Empire" is the 4-to-1 pre-race choice. Two horses, "Always Dreaming" and "McCracken," are the co-second choices at 5-to-1.

PHOTOS: Hats at the 2017 Kentucky Derby

After a soggy start to derby weekend, jockeys are counting on a break in the clouds before the run for the roses.

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