Every year around this time, the San Antonio Spurs hit the road for a few weeks while their arena hosts a rodeo. It is a tradition unique to them. For most players, that means time away from their families, not sleeping in their own beds. For forward Keldon Johnson, it means having his friends watch his ranch. Johnson owns a 22-acre ranch outside San Antonio, in Texas’ Hill Country, where he raises all sorts of animals: goats, chickens, cows, a few horses and a miniature donkey. In late