Any spectators arriving late to the stadium would have missed a frantic first five minutes with Muangthong coming close twice before Buriram opened the scoring in the fifth minute. Teerasil lost his marker from a floated Pichitpong free kick but his header was centimeters wide, while Djurovski beat the offside trap before firing his angled shot into the midriff of Siwarak as the TPL champs opened brightly.
After the initial excitement, the game slowed down with the Korean referee issuing a sprinkling of yellow cards as the game was peppered with niggly fouls.
Five minutes before the break, Muangthong had a great chance to level when Linz broke through on goal but his weak shot was saved by Siwarak.
In injury time, Anawin's dipping drive was tipped over by Weera as the FA Cup holders went into the interval 1-0 up.
The game took a twist on the hour when Mongkol was given a second yellow card for blocking the ball with his arm on the halfway line. It was a silly foul to concede and the Korean official called it correctly by giving the former Thai Port man a second yellow.
As a result of being a player down, Muangthong were exposed at the back and should have been two down when Bustos rounded Weera on 69 minutes. The angle just wasn't right for the Chilean and his shot hit the woodwork with the empty net beckoning.
Five minutes later, Buriram had a goal chalked off after Theeratorn was adjudged to have been offside when he rolled home a square pass from Bustos.
The clincher came on 83 minutes when substitute Anthony set up and unmarked Bustos who controlled and side footed home with his left foot.
It was a deserved win for Buriram as Suchao lifted the cup in front of the watching GU12 (Nope, me neither!!)
On the evidence of the final, Buriram's new signings certainly played better than their opponent's ones. Bustos will obviously take the plaudits yet Chappuis sits nicely in front of the back 4 and Carmelo Gonzalez had a promising debut.
Muangthong looked devoid of ideas upfront and the system to accommodate Linz didn't work. At the back, they defended far to high up the park and were caught out several times as Buriram broke their back line on far too many occasions.
Man of the Match: Ramses Bustos - Lively debut with two goals