Forward Takamitsu Tomiyama scored the winner to give Omiya Ardija a 2-1 win over defending champions Sanfrecce Hiroshima and stretch the lead in the J-League standings on Monday.
Slovenian forward Milivoje Novakovic headed home a cross from the right to put Omiya one up in the 67th minute, but Japan international striker Hisato Sato made it even 10 minutes later before Tomiyama nodded home in the 84th.
"We had a couple of scoring chances in the first half and we couldn't score. It was disappointing. Hiroshima played better and aggressive in the second half," said Omiya's Slovenian coach Zdenko Verdenik.
"It was a difficult game, but we won in the end. I think we played a good game," he added.
Omiya now have eight wins and two draws for 26 points, six points above Yokohama Marinos, who crashed to a 2-1 defeat to Kashiwa Reysol.
They were followed by seven-time champions Kashima Antlers on 19 points, Urawa Red Diamonds on 17, FC Tokyo and Cerezo Osaka on 16.
Lee Tadanari scored an equalizer in injury time as FC Tokyo drew with Jubilo Iwata 2-2, while Brazilian striker Davi hit a 17-metre shot into the net to give Kashima a 1-0 win over Shonan Bellmare. Urawa drew with Osaka 2-2.
In other games, Kawasaki Frontale defeated Shimizu S-Pulse 2-1, Sagan Tosu downed Oita Trinita 4-2, and Vegalta Sendai outclassed Nagoya Grampus 2-0, while Albirex Niigata drew with Ventforet Kofu 1-1.