Danny Castillo vs. newcomer Dustin Poirier a late addition to WEC 50 fight card

A lightweight bout pitting Danny Castillo against promotional newcomer Dustin Poirier is a late addition to the upcoming WEC 50 card.

WEC officials today formally announced the bout.

WEC 50 takes place Aug. 18 at The Pearl at the Palms Casino Resort in Las Vegas and features a headliner between bantamweight champ Dominick Cruz and Joseph Benavidez.