Baniyas kept Ajman at bay for 82 minutes at Rashid bin Saeed Stadium.
Ahead of the third-round fixtures, which took place on 8-9 October, Baniyas player Suhail Al-Nubi said the team hoped to maintain its positive run and take all three points.
Ajman shares the summit
The win put Ajman level with Al Wasl on nine points, though Al Wasl remains listed as group leader. Baniyas could not find an equaliser after Juma struck, leaving his goal to decide the match.
The UAE Pro League's official third-round schedule listed the Ajman-Baniyas fixture for 9 October at 17:10 local time at Rashid bin Saeed Stadium. YS Scores lists Nasser Al-Ali as the referee.
Al Jazira loses ground after missed penalty
At the Oval Stadium, Al Jazira drew 0-0 with Sharjah and lost its place at the top of the shared standings. Cornado had a chance from the penalty spot in the 45th minute, but Al Jazira goalkeeper Ali Khasif saved it. Sharjah24 also reported the goalless result.
Al Jazira now sits fourth on seven points, two behind Ajman and Al Wasl. Sharjah has four points.
Defending champion Al Wahda recorded its first win, beating Al Dhafra 2-0 at Al Nahyan Stadium. Ibrahim Diarra scored in the fifth minute from Omar Khribin's through ball. Christian Benteke added the second in the 89th minute. Al Dhafra had ten men after Dominique Mendy was sent off in the 36th minute.
Al Wahda had 77 per cent possession and took 20 shots. Six were on target. Al Dhafra managed four attempts, with two on target. The result gave Al Wahda its first three points. Al Dhafra remained scoreless after a third defeat.
