Often, it’s 500 shots. Sometimes, a thousand. And the Betts siblings will not stop until they’ve pushed themselves to their hooping brink. Sienna Betts, the Grandview senior who is a five-star recruit, sees the workouts with her freshman brother, Dylan, as part of her push to cement herself as one of the best girls basketball players in Colorado history. For Dylan, the weekly sessions with Sienna throughout the summer and fall were stepping stones to starting his high school career at Cherry Creek.