The late introduction of suits made by Under Armour was one in a series of crucial mistakes that led the U.S. speedskating team to its worst performance in 30 years at the Sochi Olympics, according to a new internal assessment.

Ted Morris, the executive director of US Speedskating, said another mistake was the team shouldn't have trained at high altitude and outdoors in Italy ahead of the Games, which were indoors and at sea level. The conditions in Italy masked a dip in form by the athletes in the program ahead of the Olympics.

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