Fiorentina got ahead 28 minutes into the match held at Stadio Artemio Franchi with a goal from Thereau, reports Efe.
Thereau struck again with a second goal in the 57th minute.
With 18 minutes to go, Brazilian Samir Caetano de Souza scored the only goal for Udinese.
After the home win, Fiorentina is 11th in the Serie A table with 10 points.
Udinese is in the 14th position with just six points after suffering its sixth defeat this season.
Napoli, which enjoyed a 1-0 away win over Roma on Saturday, leads the Serie A table with 24 points, five points ahead of Inter Milan, Lazio and defending champion Juventus.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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