A 41st minute-header from prolific Thai international Teerasil Dangda was enough to seal the three points and guide the Twin Qilins to its third title triumph in four years.
Former Manchester City striker Teerasil came close to adding to his tally of 18 for the season on a number of occasions, but his first-half effort proved sufficient.
Unbeaten in 32 games, the TPL’s ‘invincibles’ proudly takes home the top-flight trophy with three games of the season remaining, 14 points ahead of second-placed rivals Chonburi FC.
"We've been working very hard this season. Not only the coaching staff but everybody in the team. A lot of people thought that we wouldn’t be able to come back after we finished third last season. But we came back and won the title today," Muangthong director Ronnarit Suewaja told The Bangkok Post, adding that the team would endeavor to increase its unbeaten streak.
"We still have three matches to play and we will try our best to win all the matches and finish this season without losing a single match."
Owned by Siam Sports Syndicate and the Kingdom’s second largest company Siam Cement Group, the Nonthaburi outfit are one of the wealthiest teams in the league. Emerging from the doldrums of Thailand’s third tier, Muangthong emphatically won back-to-back Division 2, Division 1 and TPL titles from 2007 to 2010.
The club is perhaps better known on the international football stage for its brief affiliation with one-time Liverpool legend Robbie Fowler, who coached and played for the champions last year. After netting only twice in 13 appearances, however, the ex-England international left Muangthong and is currently unattached.
The newly-crowned champions wrap up the season with three away fixtures against Big Bang Chulalongkorn University FC, Thai Port FC and BEC Tero Sasana FC.