Kentucky Derby winner Medina Spirit was allegedly juiced up when he won the race, because he apparently tested positive for steroids.

The legendary Bob Baffert, the horse's trainer, broke the news Sunday that the test results showed the presence of corticosteroid Betamethasone. It's kinda technical, but the sample came back positive for 21 picograms of the drug. It's used as an anti-inflammatory.

This means the horse could be disqualified. BTW ... Medina Spirit is the only horse in the race to test positive.

Baffert denies doing anything wrong ... "I don't know what's going on, but there's something that is not right.” It's not official till the split sample comes. Usually, we wait for that, but I wanted to get in front of it."

Facts are facts, and this would be Baffert's 5th medication violation since May, 2020.

The good news for bettors ... they won't have to give their money back. The bad news for Baffert, the trainer and the jockey ... they'll have to return their winnings if their appeal fails.

If Medina Spirit is stripped of the win, it'd be the first DQ since 1968, when Dancer's Image won but was later disqualified for an anti-inflammatory drug.