Defending Thai League 1 champions Buriram United edged relegation-threatened PT Prachuap 1-0 in a home game on Saturday night to give their new coach Jorginho a second win in three matches.
Korean defender Kim Min-Hyeok netted the only goal of the game after 80 minutes.
Jorginho, a former Brazil right wing back, is confident that the Thunder Castle will retain their title at the end of the season.
"It was a tough game for us because they [Prachuap] played with a packed defence," said the Brazilian coach under whom Buriram have bagged seven points from three matches so far.
"We tried to do everything to score, used the two wing backs, but the opponents really played with good defence and closed the game on the wings.
"We had to use two centre-forwards and play an attacking game. It allowed our opponents to launch counter-attacks and their players Samuel Rosa and Derley did put us under a lot of pressure.
"During half-time, I told the players to be patient and pass the ball quickly. Our young player Thanakrit Chotmuangpak made an impact when he came on as a substitute.
"I am very happy with my team. I have been here only two weeks and my job is to change the way they play."
Also on Saturday night, hosts Muang Thong United were at their best as they defeated Trat 2-0.
Willian Popp scored both goals to help the Kirins claim three points.
Chiang Rai United suffered a home defeat to BG Pathum United, going down to the Rabbits 3-2.
Meanwhile, Brazilian striker Ricardo Santos had a brace as hosts Uthai Thani beat Khon Kaen United 2-0.