Struggling Gamba Osaka squandered the chance to move within two points of safety after collapsing 3-2 at home to promoted Sagan Tosu in the J.League first division on Friday night.
Goals from Takahiro Futagawa and Akihiro Sato put Gamba in control at Expo Stadium, but Yohei Toyoda pulled one back on 68 minutes and Naoki Fujita leveled in the 86th before netting the winner in the fourth minute of injury time.
Tosu improved to 20 points from 13 games after their first away win of the season, seven behind leaders Vegalta Sendai, while Gamba remain third from bottom on 9 from 12, four back of Kashiwa Reysol, who play Albirex Niigata on Saturday.