A last-gasp goal gave Chiang Rai United a 3-2 home victory over PT Prachuap in a Thai League 1 game last night.
The match was heading for a draw before Kim Ji-Min struck in the third minute of the added time for the Beetles.
The Wasps went ahead twice in the game but allowed Chiang Rai to level the score on both occasions.
Tanasith Siripala gave the visitors the edge in the sixth minute but Shinnapat Leeaoh equalised for the hosts after 33 minutes.
Samuel Rosa stuck for the Wasps shortly before the half-time but only to see Nelson Bonilla convert a 65th-minute penalty to restore parity again.
Meanwhile, Chonburi will be keen to make the most of their this evening's game against top-flight first-timers Lamphun Warriors and make a quick return to their winning ways.
Chonburi were beaten 2-0 by runaway league leaders Buriram United last week.
While are the Sharks are hoping for an easy home game against 14th-ranked Warriors, Chonburi coach Sasom Pobprasert has cautioned his men against taking their opponents for granted.
"We are ready for the match but we cannot afford to underestimate any team, including Lamphun Warriors," said Sasom.