A slight change has been made to this weekend's WEC 45 event, as promotional newcomer Courtney Buck will fill in for Tyler Toner and face fellow WEC newcomer Brandon Visher on the un-aired preliminary portion of the card. News of Buck replacing Toner was first reported by MMAjunkie.com and has since been confirmed by the WEC on its official website.

As reported earlier by MMAWeekly.com, Toner was forced out of his WEC debut against Visher after he was denied a license to fight by the Nevada State Athletic Commission for failing to meet Nevada's licensing requirements due to his eye examination results.

Buck has put together six straight wins since suffering his lone career loss in his MMA debut against Adam Michel in September 2008. He most recently scored a first round TKO win over Cody Pasquale on Nov. 25.

The Minnesota Top Team product has put together a 6-1 MMA record, with all six of his wins coming by stoppage. Also, all six of his wins came while competing for the Minnesota-based Brutal MMA promotion.

Visher enters the WEC having put together a 12-0 MMA record, with 9 of those victories coming via stoppage. The Hawaiian native is the current Up & Up Extreme Cagefighting featherweight champion and most recently defeated Strikeforce veteran Issac de Jesus at the promotion's September event. During his five year career, Visher has competed for other notable Hawaiian promotions such as X-1 and Rumble on the Rock.

WEC 45 takes place on Dec. 19 at The Pearl at The Palms Casino Resort in Las Vegas, NV, and the main card will air live on Versus. The event is headlined by a lightweight bout between Donald Cerrone and Ed Ratcliff.

In addition, former IFL star Chris Horodecki meets rising contender Anthony Njokuani in another lightweight feature and Joseph Benavidez will battle it out with submission ace Rani Yahya in a bantamweight tilt.