The Argentine midfielder struck twice in the 4-3 loss.
"Alvarez? Iâ€™m really happy for him and Iâ€™m sorry when heâ€™s criticised because I know itâ€™s not easy. He seemed a bit down at the end of the first half, then he reacted very well with two goals. Itâ€™s a shame they didnâ€™t help us win," said Rocchi.