Following a gruesome leg injury at UFC 168, former UFC Middleweight Champion Anderson Silva will return to headline UFC 183 against Nick Diaz. Silva will be fighting in a bout with no title on the line for the first time in six years, with his last non-title bout being a win over James Irvin at light heavyweight at UFC Fight Night 14. Diaz is returning to action after a self-imposed retirement, which came after a loss to then UFC Welterweight Champion Georges St. Pierre at UFC 158. UFC 183 takes place on January 31st from a location TBA in Las Vegas, Nevada with the aforementioned fighters headlining.