(Portland, OR)  --  The Timbers crushed D.C. United 4-0 to cinch a MLS playoff slot.  Diego Valeri had a goal and an assist.  He is the second player in MLS history to score 20 goals and have 10 assists in a season.  The Timbers will close out the regular season on Sunday against the Vancouver Whitecaps with first place at stake in the Western Conference.