A summary of MLS transactions for June 2001: June 4 D.C. United — Waived forward Ben Stafford. June 11 MetroStars — Activated forward Adolfo Valencia from injured reserve. June 12 MetroStars — Activated midfielder Billy Walsh from injured reserve. Placed forward Clint Mathis on injured reserve. June 13 Colorado Rapids — Traded a conditional 2002 draft pick to D.C. United for forward Raul Diaz Arce (El Salvador). Traded forward Junior Agogo (Ghana) to San Jose for forward Chris Carrieri. D.C. United — Signed midfielder Stephen Armstrong (South Africa). Traded forward Raul Diaz Arce (El Salvador) to Colorado for a conditional 2002 draft pick. San Jose Earthquakes — Traded forward Chris Carrieri to Colorado for forward Junior Agogo (Ghana). Waived midfielder/forward Wojtek Krakowiak.