After playing a goalless draw, Moiz Akmal scored the winner in the 66th minute of play.
Finding space in Ansar Sporting defence, Akmal received a calculated pass from Hasan Ahmad and blasted the ball into the net to make it 1-0.
They then defended their post for the remaining part of the match to move up in the knock-out tournament.
Earlier, Former MLA Anees Ahmed inaugurated the tournament.
On Saturday: Young Muslim Football Club vs Rahul Sankrutyayan Sports Association at 2.30 pm.