Inter Milan right back Maicon is in doubt for Sunday night's derby against AC Milan after pulling up with a thigh strain in training Friday.
Leaders Inter, who are eight points ahead of third-placed Milan, said they would assess the Brazil defender's condition on Saturday and Sunday.
Italy under-21 forward Mario Balotelli is suspended for the scudetto showdown but Brazil striker Adriano returns after a three-match ban.
Inter boss Jose' Mourinho is expected to put Patrick Vieira on the bench after the France captain's recovery from an injury that kept him out since November.
Milan playmaker Kaka is not expected to win his fight to be fit for the derby but centre back Alessandro Nesta is likely to be in the squad after recovering from a back problem that has kept him out all season.
Milan's central defender Daniele Bonera is suspended for the game, which many pundits see as a must-win match for AC coach Carlo Ancelotti.
It will be the last derby for Milan captain and Italy great Paolo Maldini, who will retire at the end of the season just before his 41st birthday.
