The New York Knicks have lost Amar'e Stoudemire and Kenyon Martin for up to two weeks after MRI results confirmed diagnoses for the power forwards stemming from injuries sustained in a Thursday loss.

The Knicks said Martin has a left ankle sprain and tendinitis. He is expected to be out about two weeks.

Stoudemire tweeted Friday that he "should be able to return to action in a week or two."

The Knicks later confirmed Stoudemire's announcement and said that he is "expected to be out approximately two weeks."