The Turin giants stretched their lead at the top of the table to 14 points on Wednesday courtesy of a first-half brace from the Argentina striker, who is now the leading scorer in Serie A with 18 goals.
Tevez opened the scoring with a solo goal after 25 minutes and doubled their lead from close range seven minutes later at Juventus Stadium after Antonio Mirante had kept out Arturo Vidal's effort.
Milan dealt a blow to fourth-placed Fiorentina's hopes of securing a UEFA Champions League spot as they secured a 2-0 win at Stadio Artemio Franchi.
Fiorentina went into Wednesday's clash on the back of an impressive 1-0 win at third-placed Napoli on Sunday, but they were brought crashing back down to earth by Clarence Seedorf's previously out-of-sorts side.
Napoli put the disappointment of their defeat to Vincenzo Montella's side behind them by securing a 4-2 victory at bottom-of-the-table Catania.
Rafael Benitez's men stunned their beleaguered hosts by racing into a 4-0 half-time lead courtesy of Duvan Zapata's first two goals in Serie A and further strikes from Jose Callejon and Henrique, who opened his account for the Naples outfit.
