4 horse Flexibility shows a nice pattern of improving and is a even $ favorite.
Looking at the sheets the 6 horse Bird of Trey improved from a 4 to a 0 that makes him the fastest horse in the race out of Birdstone which show improvements from a 2-3 year old.
Servis lately looks to be doing pretty good showing a 66% chance to top or pair making this horse a plenty fast to win.
Do not like Prx horse shipping however at 10-1 M/L is to tempting not to take a stab.
W/P bet on the 6 with a EX box 4-6
Good Luck