(Eugene, OR)  --  University of Oregon is sliding in the latest college basketball rankings.  The Ducks are down five spots to 17th in the "USA Today" Top 25 Coaches' Poll.  UO lost back-to-back games last week to drop its record to 20-and-6 overall and 9-and-4 in the Pac-12.  The Ducks host rival Oregon State on Saturday.