Inter Milan defender Rolando admitted frustration with their 1-1 draw against Cagliari.

Cagliari pegged Inter back thanks to a controversial penalty.

"We had a good game especially in the second half, but we conceded a goal from a penalty that was not there. I'm sorry but this is football. Serie A is tough and difficult, after the penalty they have not had other chances and in the second half we dominated.

"It's hard to play against teams who defend with eleven behind the ball."