In the match, held in Isfahan’s Fooladshahr Stadium, Amir Hossein Hosseinzadeh scored the winner before halftime.
Tractor midfielder Mehdi Torabi was shown a straight red card in the 31st minute.
Tractor moved top with 13 points thanks to a superior goal difference than Sepahan and Malavan.
Elsewhere, Gol Gohar was held to a goalless draw against Havadar in Sirjan, Chadormalu edged Mes 1-0, Malavan defeated Esteghlal Khuzestan 1-0 in Bandar Anzali and Aluminum beat Kheybar 1-0 in Arak.