Courtesy of Devin Cutting:

Due to a scheduling conflict, the SMACKDOWN Live Event at the Rose Garden in Portland, Oregon on 8/20/2011 has been canceled. All ticket holders for this event should contact the Rose Quarter box office, http://www.comcasttix.com or 1-877-789-7673 for refunds. WWE would like to thank all of the fans who purchased tickets for this event.

WWE RAW will be back at the Rose Garden on 2/27/2012. An on sale date has not yet been announced