Lauzon (21-7) was expected to face Terry Etim, but Etim was knocked out with an injury. In his place will be Varner (20-6-1), who returned to the UFC with a stunning knockout of Edson Barboza earlier this year.
The UFC on Fox 4 main card now boasts Lauzon-Varner, Travis Browne vs. Ben Rothwell, Ryan Bader vs. Lyoto Machida and a five-round main event of Mauricio "Shogun" Rua vs. Brandon Vera. The prelims will be broadcast live on FUEL TV.
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