Johnny Walker admits Octagon rust slowed him early but he recovered to score a brutal second-round TKO over Zhang Mingyang at UFC Shanghai.

Johnny Walker earned his first UFC win in more than two years on Saturday. | Getty/UFC If Johnny Walker's approach in the opening frame of the UFC Shanghai main event seemed out of character, well, there's a reason for that.

UFC Shanghai highlights the light heavyweights, as Johnny Walker and Zhang Mingyang make history early Saturday morning in China.