Juventus won the Italian title for the 31st time on Saturday after Arturo Vidal's first half strike saw Massimiliano Allegri's side defeat Sampdoria 1-0. It was their fourth league title in a row with as many games to spare this season. Chilean midfielder Vidal met Stefan Lichtsteiner's deep floated cross with a perfectly placed header in the 32nd minute to put Juventus 17 points ahead of second-placed Lazio, who travel to relegation-threatened Atalanta on Sunday with only 15 points available to them from their remaining five games.