(Portland, OR)  --  The Timbers used a pair of second-half goals to power past the Philadelphia Union, 2-1, at Providence Park on Saturday.  Diego Valeri and Fanendo Adi each found the back of the net for Portland.  The Timbers travel to Houston to face the Dynamo on Saturday at BBVA Compass Stadium.  Portland is fifth in the Western Conference with 41 points at 11-11-and-8.  Houston is last in the West.