The Italian side scored with only 12 minutes remaining and with their only effort on goal to snatch the game despite a strong performance from the Hammers.
Gianfranco Zola sent out a very strong first team side including Scott Parker, Matthew Upson, Carlton Cole and new signing Luis Jimenez and they looked lively, often producing a number of clever attacking moves.
The lack of composure in front goal is still a concern for Gianfranco Zola as the Hammers have failed to hit the net in two of their final three first-team pre-season friendlies.