Giuseppe Rossi continued his remarkable comeback with a 15-minute hat-trick as Fiorentina recovered from two goals down to defeat previously unbeaten title-holders Juventus 4-2 in Serie A on Sunday.
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The US-born Italy striker, back this season after successive knee injuries effectively side-lined him for two years, took his tally to eight goals in as many games while Juventus coach Antonio Conte was left visibly seething by his team's collapse.
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There was plenty of other drama with a total of eight penalties being awarded in Sunday afternoon's six games and a first top-flight win for Serie A debutants Sassuolo who beat Bologna 2-1.
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Sampdoria converted two penalties, the second in the sixth minute of stoppage time, for a 2-1 win at Livorno while Jorginho scored two penalties for Hellas Verona as they came from behind to beat Parma 3-2.
15 Minute Hat-trick? WOW! The opponent's defence must be weak