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. A 4-year-old who was the youngest horse in the 1 1/2-mile turf race for 4-year-olds and up, Atitlan ($20.20) wo n for the first time in four starts since the Grade II Twilight Derby last October. John Shirreffs trains the son of The Factor. Divin Propos finished second, Gold Phoenix third in his 7-year-old debut, favorite Easter fourth in the field of eight. Sunday, Casalu (Flavien Prat riding) will try to become the first three-time stakes winner at the nearly three-month-old Santa Anita meet when she faces Will Then (Umberto Rispoli) and three others in the $100,000 China Doll Stakes for 3-year-old fillies at 1 mile on turf. Related Articles Sports | Santa Anita horse racing consensus picks for Saturday, March 22, 2025 Sports | Santa Anita horse racing consensus picks for Friday, March 21, 2025 Sports | Horse racing column: Daughter’s good health has Tiago Pereira riding high Sports | Horse racing notes: Gold Phoenix starts 7-year-old season at Santa Anita Sports | The Chosen Vron retired from racing ...read more read less