ARCADIA, Calif. – As the Breeders’ Cup draws near and prospects are put through drills designed to have them ready for the championship event, some thrive and go forward, while others show they’re not quite ready for prime time. On Sunday, the day before pre-entries were due for this year’s event, both Improbable and Maximum Security showed they are progressing ideally toward a rematch in the BC Classic at Keeneland on Nov. 7, while others based at Santa Anita bowed out.