PHOENIX -- Arizona Cardinals wide receiver Michael Floyd has undergone surgery after injuring his fingers during practice.

Floyd was hurt Wednesday and says in a tweet the operation "went well as expected." He thanked supporters for their love.

He also sent a photo on Instagram of him in a hospital bed with his left hand and forearm bandaged. Floyd was smiling, with a stuffed bear on his shoulder.

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The Cardinals have said only that he injured his left hand and it's not known whether Floyd will return for the Sept. 13 season opener at home against New Orleans.