The Bologna forward fell awkwardly and Enis Nadarevic accidentally trod on his arm during the 0-0 draw with Genoa.
Diamanti was stretchered off in pain and taken straight to hospital for X-Rays amid fears a fracture would rule him out of the Confederations Cup.
This evening Bologna announced there is a sprain and bruising to the right wrist, “but tests ruled out fractures.”
He was named in the provisional group of players for a get-together, though Italy coach Cesare Prandelli will then whittle that down for the tournament itself.
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