About halfway through a brain-bending 45-minute range session with Jordan Spieth, I ask what might be a very dumb question. “If you could turn your brain completely off and just swing the golf club, what would happen?” Spieth doesn’t hesitate, which suggests he’s thought plenty about this before. That’s always a safe assumption with Spieth, who may have the most active mind in professional golf: he’s thought plenty about this before. “It’d be horrendous,” he says. “If you said ‘don’t think and just swing’ — I’ve never actually played like that. I’ve always had a manipulating feel through my backswing.” Spieth explains that he needs to have something to focus on as he takes the club away or...
