Gilardino scored his 19th Italy goal to beat Bulgaria, but is still "a little angry, as I could've scored a second."
The Genoa striker is just one shy of 1982 World Cup winner Paolo Rossi's total for the Azzurri.
"I am a little angry, as I could've scored a second today and matched Rossi's tally. I should've been sharper and gone right round the goalkeeper," he told Rai Sport.
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