AC Milan striker Alexandre Pato looks set to miss four weeks of action after being injured in the 1-1 draw with Udinese on Wednesday.
The Brazil international was substituted in the 21st minute after limping off the field with an apparent hamstring injury.
A note on Milan's official website reveals that Pato has injured the biceps muscle in his right thigh and will be sidelined for a month.
The former Internacional man will likely miss two Champions League clashes and a handful of Serie A encounters.
Last year's Scudetto winners currently sit in 14th place and are still looking for their first victory of the campaign.