MLS expansion franchise Portland Timbers have officially announced their coaching staff for their inaugural season in North America's top flight.

Head coach John Spencer has installed a team of four, including himself, to lead the Timbers in the 2011 MLS season.

He has kept assistant coach Amos Magee and goalkeeping coach Adam Smith from Gavin Wilkinson's tenure and has added former LA Galaxy director of player development and youth academy chief Trevor James.