Strikeforce welterweight champion Nick Diaz has turned his back on an arranged boxing contest to focus on his MMA career - with a blockbuster clash with UFC champion Georges St-Pierre looking increasingly likely.
Diaz was due to enter the ring to fight former super middleweight world champion Jeff Lacy in the autumn, but the promoter of that fight announced on Monday that the contest will no longer be happening - saying the 27-year-old has "an opportunity of a lifetime" to consider in his MMA career.
