Sampdoria. They were looking for the win since minute 1 and they were the team that looked more likely to score the winner.
Cassano was at the same time the best player of Sampdoria and Inter. He was moving great and he was a constant danger to Cesar. He made all the others in Samp play better. But he also messed up so many good opportunities, he missed a 100% chance (actually he didn't even manage to shot the ball, even though he was one on one with Cesar) and if he was more calm and serious, Sampdoria would have certainly won the match.
Nonetheless, he's a one man team. The only brilliant player among hard workers. If he has an off day and if he's well guarded, i believe Sampdoria will suffer a lot.