Port taught Kanchanaburi Power a brutal lesson with an 8-0 rout of the Thai League 1 newcomers on Saturday night.
The hosts and their passionate supporters were in full voice after Lucas Tocantins put Port ahead in the 10th minute.
Kanchanaburi, competing in the top flight for the first time, suffered a further blow when Gerson Rodrigues was shown a red card in the 22nd minute.
The visitors held firm for much of the first half but conceded again when Suphanan Bureerat doubled Port’s lead before the interval.
After the break the floodgates opened as the extra workload and the numerical disadvantage took their toll on Kanchanaburi, who went on to concede six more goals.
Peeradol Chamrassamee (62, 66), Matheus Pato (75, 83) and Teerasak Poeiphimai (79, 86) all found the net, delighting the large home crowd.
The emphatic victory lifted Port to fifth place in the table, with 10 points from seven matches.
Also on Saturday, Rayong extended their fairytale start in the top division by claiming a 1-0 victory at former champions Chiang Rai United. The visitors’ winner came late when Ryoma Ito struck shortly before the final whistle.
Elsewhere, Uthai Thani were held 1-1 at home by Chonburi, while Ayutthaya United shared the points with Sukhothai following another 1-1 draw.