Tractor beat Persepolis 8-7 on penalties after drawing 1-1 in regular time.
Mehdi Torabi found the back of Persepolis’ net with a long-range free kick in the 56th minute in Tabriz’s Yadegar-e Emam Stadium.
Persepolis captain Hossein Kanani equalized the match in the dying moments of the match.
Tractor defender Mohammad Naderi was shown his second yellow card in the 104th minute.
Tractor will face Shams Azar in Round of 16.