Ansan secured a 2:1 victory over Ulsan Hyundai in the K-League 1 Regular Season, stage 30, played at Anyang Stadium on 19 September 2026. The hosts took the lead through Matheus Oliveira in the twenty-seventh minute before Lee Dong-gyeong equalised for the visitors just before the break. Breno Herculano Almeida then stepped up to convert a penalty in the sixty-first minute, and despite a late miss from Yago Cariello Ribeiro at the other end, Ansan held on for all three points.
The match had an uneven rhythm, with Ulsan controlling possession but struggling to create clear openings. They finished with 0.65 of the ball and 96 attacks, yet registered zero big chances created while Ansan managed the same on 0.35 possession. Shots on target stood at six for the visitors against five for the hosts, but accuracy was lower for Ulsan at 0.35 compared to 0.45 for Ansan.
Substitutions came thick and fast in the second half as both sides searched for a winner. Pedro Antonio Pimentel Ferreira was replaced at half-time, and Kang Kim followed shortly after the goal. The game opened up further around the seventy-minute mark with Kim Young-Gwon and Lee Gyu-sung brought on together, and by the seventy-fifth minute Ansan had made three changes to chase the result.
Discipline was tested throughout, with six yellow cards shown in total—three to each side. Jung Seung-Hyun, Darijan Bojanić, Breno Herculano Almeida, Yong-Woo Park, Kwon Kyung-Won and Kim Jeong-hoon all received cautions. The most telling moment for Ulsan was Yago Cariello Ribeiro's penalty miss in the ninety-second minute, which effectively sealed Ansan's victory.
The result keeps Ansan in sixth place with 27 points from 19 games, one point behind fifth-placed Ulsan who sit on 28 points after eight wins and seven defeats. Both sides have played the same number of matches, and the gap between them remains narrow as the season heads toward its conclusion.
Ansan's recent form had been inconsistent, with defeats to Gangwon and Daejeon Hana Citizen among their last five outings, while Ulsan appeared more settled after victories over Incheon United and Seoul. This win gives the hosts something to build on, even if the statistics suggest they were not the dominant side on the pitch.