For the first time in the 145-year history of the Kentucky Derby, the horse who crossed the finish line first was disqualified for interference.

Moments after colt Maximum Security and jockey Luis Saez appeared triumphant, those celebrating at Churchill Downs suddenly saw their cheer disappear.

Second-place horse Country House's team objected to the victory, claiming Maximum Security's wide turn heading into the stretch impeded other horses on the muddy track.

After a 20-minute review, officials said Maximum Security was guilty of a contact foul and awarded the win to Country House, jockey Favien Prat and trainer William Mott.

It was a stunning reversal for Maximum's Security team, and sudden joy for the Country House house set.

(SOUNDBITE) (ENGLISH) COUNTRY HOUSE TRAINER WILLIAM MOTT SAYING: 'As far as the win goes, it's bittersweet.

In my opinion, I think they made the right call.

I will try to look at it from an unbiased point of view.'

Betting odds put Country House as a 65-to-1 long-shot to win the race.

Maximum Security was the 9-2 favorite.

The judges' decision was lauded as brave by those who believe in adhering strictly to the rules, but was panned by others, including U.S. President Donald Trump, who tweeted, 'Only in these days of political correctness could such an overturn occur.

The best horse did NOT win the Kentucky Derby - not even close!'

Maximum Security co-owner Gary West told the Associated Press the ruling was 'egregious' and said he was pondering his next step, including a possible appeal.