LOUISVILLE, Ky. (AP) - It's looking like a wide open Kentucky Derby.

There are two trainers saddling three horses each. A horse trying to win for the first time. An early favorite whose training was interrupted. Another attempting to overcome irascible behavior.

The 20-horse field for Saturday's Kentucky Derby lacks a dominant runner. The winter prep races did nothing to establish a clear favorite.

Classic Empire is the 4-1 pre-race choice. Two horses, Always Dreaming and McCraken, are the co-second choices at 5-1. Toss in the threat of rain early in the day and it all makes for a most unpredictable Derby.

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