"I never worry about my control," Marmol said. "I worry about three outs before they score on me. You work hard. That's what you're looking for: work hard and get better every day. You never stop learning." - Carlos Marmol
There's little doubt the Cubs have a great closer, if a little wild. His sometimes erratic control (see the middle chart, in which he occupies an island typically reserved for the accidentally awesome) should give his team a touch of concern, even if he never worries about it.