LOUISVILLE, Ky. (AP) — Justify has been made the early 3-1 favorite for the Kentucky Derby, with Europe-based Mendelssohn the second choice in a full field of 20 horses.

Trained by four-time Derby winner Bob Baffert, Justify drew the No. 7 post on Tuesday. Six horses have won from there, most recently Street Sense in 2007.

Ontario-bred colt Flameaway drew the fourth post on Tuesday. Trained by Canadian Racing Hall of Famer Mark Casse, Flameaway is currently listed at 30-1 to win the first race of the Triple Crown.

Watch the 144th Kentucky Derby LIVE Saturday on TSN.

Justify, the undefeated winner of the Santa Anita Derby, is one of two horses in Saturday’s 1 ¼-mile race who didn’t race at age 2. The other is 6-1 third choice Magnum Moon. No horse since Apollo in 1882 has won the Derby after not racing as a 2-year-old.

More history is working against Mendelssohn. A horse coming from Europe has never won America’s greatest race. Trained by Irishman Aidan O’Brien, UAE Derby winner Mendelssohn is the 5-1 second choice. He drew the No. 14 post.

The post order is as follows:

1 Firenze Fire
2 Free Drop Billy
3 Promises Fulfilled
4 Flameaway
5 Audible
6 Good Magic
7 Justify
8 Lone Sailor
9 Hofburg
10 My Boy Jack
11 Bolt d’Oro
12 Enticed
13 Bravazo
14 Mendelssohn
15 Instilled Regard
16 Magnum Moon
17 Solomini
18 Vino Rosso
19 Noble Indy
20 Combatant