Jolie Olimpica ($4.40) ran 5 1-2 furlongs on turf in course record time of 1:01 to win her American debut in Saturday's Grade 3 Las Cienegas Stakes.
Jolie Olimpica stalked pacesetter Kentan Road to the final furlong before pulling away to beat that rival by 1 1-4 lengths.
Jolie Olimpica is unbeaten in four starts, having won three races in Brazil.
The previous record of 1:01.49 was held by Torosay from a race on Nov. 3. The track began running 5 1-2 furlongs in September.