Atitlan continued his improvement by swooping from near the back of the pack with Hector Berrios to score a 9-1 upset in the $100,000, Grade III San Luis Stakes at Santa Anita on Saturday.

After rating in seventh early and then in sixth well into the final turn of the $101,500 San Luis Rey Stakes (G3T) March 22 at Santa Anita Park, Atitlan unleashed a blazing move to surge past ...