LAS VEGAS, NV - JULY 11:  (R-L) Rory MacDonald elbows Robbie Lawler in their UFC welterweight title fight during the UFC 189 event inside MGM Grand Garden Arena on July 11, 2015 in Las Vegas, Nevada.  (Photo by Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images) *** Local Caption *** Robbie Lawler; Rory MacDonald