Former Italy Under-21s and Serie B Livorno player Piermario Morosini has suffered a cardiac arrest and is now in an induced coma.
The midfielder has been rushed to Santo Spirito hospital after collapsing in the 31st minute of a Serie B encounter at Pescara.
A defibrillator was also used on the 25-year-old, with the game subsequently being called off as many players left the pitch in tears.
The situation is similar to Bolton player Fabrice Muamba's collapse at Tottenham last month.