The teams were locked in a 1-1 draw at the end of regulation time.
Rossman Cruz took the lead in the 25th minute with efforts of Razor Braganza.
Mormugao United tried hard to score the equaliser till the end of the first half.
Post resumption, Mormugao United got the much needed equalizer in the 57th minute through a self goal.
In the resultant tie-breaker, Stanley Pereira, Menino Fernandes, Manuel Moniz, and Savio Fernandes converted for Rossman Cruz Sports Club while Paulo Sequeira, Ulgappa Madar and Tanveer Bepari were on target for Mormugao United Sports Club.
Saviour Gama of Mormugao United Sports Club was declared man-of-the-match.
Earlier, Minister for Power Milind S Naik declared the tournament open.
