‘Formidable group’ of horses finish Triple Crown at Belmont

Rock Your World trains ahead of the 153rd running of the Belmont Stakes horse race in Elmont, N.Y., on Thursday, June 3, 2021. (AP Photo/Seth Wenig)

Essential Quality trains the day before the 153rd running of the Belmont Stakes horse race in Elmont, N.Y., on Friday, June 4, 2021. (AP Photo/Seth Wenig)

NEW YORK — The Kentucky Derby winner could be disqualified for the second time in three years, the Preakness winner pulled off a big upset and now nobody knows who is the best 3-year-old horse in the country.