The Chad Brown-trained colt is 15-1 and would become the first Derby winner since 1883 with only two previous starts.
The analyst says this year's field is unusually hard to handicap, with favourites Renegade, Commandment, The Puma, Chief Wallabee and Further Ado all carrying notable doubts.
Emerging Market won the Louisiana Derby in March after a delayed debut, has trained strongly at Churchill Downs and is seen as offering value because of his stamina and upside.
Will the favorite's talent conquer a post position that has not produced a winner in 40 years?
Can a colt with only two prior races break a 143-year-old Kentucky Derby curse?