Zack Ryder underwent knee surgery last week in Birmingham, Alabama after blowing it out on WWE Smackdown Live. When asked by a fan on Twitter when he would be back, Ryder provided two timetables:
">December 19, 2016
We reported here on Wrestling News World Premium the timetable was four to six months if he needed surgery. He had the surgery, so that appears to be what it is for the time being, depending on how rehab goes.