Target Field is going 100% smoke-free. The only smoking area at the stadium will be gone for the Twin’s home opener on Monday. A long-standing policy against re-entry means that smokers will not be allowed to leave for a cigarette break and return to the game either. The Minnesota Ballpark Authority is expected to formalize the smoking ban for Target Field on Friday. It will extend to any event being held at the facility, including concerts and Gophers baseball games.