Sunray Cave Sun Hei plunged into further trouble after losing to Tuen Mun in the RedMR First Division yesterday.
Last season's Senior Shield champions, who will represent Hong Kong in next month's AFC Cup, remain rooted to the bottom of the table after a 4-2 defeat at Tang Shiu Kin Sports Ground.
With a dismal four points, Sun Hei remain the only team yet to score a victory after 10 matches this season. Their officials left immediately after the final whistle, refusing to comment.
Despite the victory, Tuen Mun coach Yan Lik-kin said it did not come easy as they had to battle for the result.
"The opposition gave us pressure because they needed to win, but fortunately we handled the second ball well today and the two-goal cushion also helped," he said.
Brazilian Roberto Fronza netted twice in the first half including a penalty in the 30th minute. Although Sun Hei midfielder Jose Diaz closed the gap early in the second half, striker Daniel Quevedo extended the lead in the 73rd minute before Chao Pengfei made it 4-1. Diaz's second was too late to change things.
Elsewhere, fellow strugglers Sun Pegasus escaped defeat against Southern, thanks to a late goal by former Hong Kong international Xu Deshuai in a 1-1 draw at Yuen Long Stadium.
Xu's free kick from the left took a deflection off Southern midfielder Ip Chung-long in the wall and the ball went into the far corner of the net, giving goalkeeper Chiu Yu-ming no chance. Folga Diego had opened the scoring for Southern in the first half.
Pegasus now have nine points, three ahead of Wofoo Tai Po.