Welterweights Bobby Voelker and William Macario will seek their first UFC victory against one another at UFC 168 this December.

Officials added the bout to the year-end card set for Las Vegas on December 28. Chris Weidman faces Anderson Silva for the UFC middleweight title in the main event.

Voelker (24-10) has lost two straight since joining the UFC from Strikeforce, falling to veterans Patrick Cote and Robbie Lawler. Macario (6-1) was a finalist on The Ultimate Fighter: Brazil 2, losing to Leonardo Santos in the finals.