Hosts Police Tero shared a point with Sukhothai following a 2-2 draw in their Thai League 1 clash at Boonyajinda Stadium last night.
Police took the lead in the seventh minute through a Yotsak Chaowana free-kick.
Sukhothai struck early in the second half with Anuchit Ngernbukkol levelling the score, but Police surged ahead soon when Leslie Ablorh shot home from close range.
Kenshiro Daniels salvaged a point for Sukhothai shortly before time.
Meanwhile, Lamphun coach Alexandre Gama has promised an all-out effort in their home game with second-ranked Bangkok United this evening.
The Angels need a win over the Warriors to keep their slim hopes of wresting this year's title from leaders Buriram United alive.
"We are fighting a battle for our survival in the top league," said Gama.
"We may be in a difficult position but I keep telling the players it is still in our hands.
"It will be a tough game for us because Bangkok United must be very confident after beating Buriram in their last match."
Bangkok United coach Totchtawan Sripan warned his players against taking Lamphun for granted.
"They are disparate to stay in the top flight so they won't be making things easy for us," he said.
Defending champion Buriram will be seeking to bounce back in their home game against cellar-dwellers Lampang this evening.