Soldado's hat-trick propels much needed 3 points for Fenerbahce.
Yellow Canaries took the lead in 31st minute at Istanbul's Ulker Stadium Sukru Saracoglu Complex.
Nabil Dirar, who found the ball in front of him inside the penalty box, did not make a mistake and put it behind the net for Fenerbahce.
Sivasspor found the equalizer in the beginning of the second half with a crafty give-and-go play as striker Thievy Bifouma easily defeated Volkan Demirel in the 47th minute.
Fenerbahce regained the lead in the 61st minute by a volley from Soldado just 20 seconds after he subbed in the game. A very busy six-yard box after the corner saw Fenerbahce hit the crossbar twice, but Soldado finished it off with a volley.
Soldado was on the scoresheet with talented shots in the 77th and 81st minutes as well, as he notched a hat-trick in only 20 minutes.
Fenerbahce increased their points total to 20 to sit at 5th place after the victory. Sivasspor are at 6th place with 19 points.