Demetrious Johnson undergoes successful shoulder surgery

UFC flyweight champion Demetrious Johnson went under the knife on Wednesday.
Johnson had successful left shoulder surgery, MMAFighting.com confirmed with Johnson following the procedure. It is unclear at this time how long his recovery will take and when he might be able to return to action. “Mighty Mouse” said he’s been experiencing shoulder pain since December.
The 31-year-old Johnson (27-2-1) is coming off another undefeated year. He went 2-0 in 2017 and in doing so became