Colorado — Waived goalie Dusty Hudock.
Columbus — Signed defender Ansil Elcock (from Malta Carib Acorns, Trinidad & Tobago).
D.C. United — Waived midfielder Gerson Echeverry.
Kansas City — Acquired defender John Diffley from Tampa Bay for future considerations; claimed striker Edmundo Rodriguez on waivers.
San Jose — Waived strikers Mac Cozier and Edmundo Rodriguez.
Tampa Bay — Placed striker Jacek Ziober on injured list; traded defender John Diffley to Kansas City for future considerations.