Bryson Cox

The annual Thanksgiving weekend "Stars of Tomorrow" card at Churchill Downs is designed to highlight aspiring 2-year-olds right before they launch into their sophomore seasons. An intriguing subplot to this year's edition, however, put the spotlight on several human rather than equine participants who could be on the cusp of bigger and better things. Eighteen-year-old jockey Axel Concepcion just might be on his way to winning an Eclipse Award as the nation's top apprentice for 2023 despite not starting racing at American mainland tracks until Feb. 19 and also having...