Buriram United saw their lead at the top of the Thai Premier League cut to just two points after a disappointing 0-0 draw with TOT.
Scott Cooper's side remain unbeaten after 16 outings in the 2013 edition of the competition, but allowed Muang Thong United to gain ground as they failed to beat 10th-placed TOT away from home on Saturday.
And Muang Thong made the most of that result 24 hours later as they cruised to a 2-1 victory against Chainat at the Khao Plong Stadium.
Piyaphon Buntao and Mario Gjurovski grabbed United's first-half goals, with Michael Byrne netting a late consolation for the eighth-placed hosts.
There was also movement just below the league's top two teams as Suphanburi leapt into fourth place courtesy of a 2-1 win over Songkhla United in which Pairote Sokam and Bireme Diouf grabbed the crucial goals.
Chonburi then failed to spark against mid-table Osotspa, being held to a disappointing goalless draw at home and relinquishing fourth spot in the process.
There were also several interesting developments at the bottom of the Thai Premier League, with the battle against relegation heating up significantly.
Fresh off the back of a surprise win over Chonburi, Samut Songkhram earned just their third away point of the season by holding Ratchaburi to a 0-0 draw on Sunday.
The two teams are now separated by only a point in 15th and 14th respectively.
That result meant that Chiangrai United, who occupy the final relegation spot, slipped two points short of safety after suffering a 2-1 away loss to Bangkok United on Saturday.
Heiko Scholz's men looked on track to earn a crucial draw after Leo Da Silva cancelled out Chatchai Kumpraya's opener, but were left sorely disappointed when Romain Gasmi struck in the 80th minute to hand the hosts the points.
Also on Sunday, 17thh-placed Pattaya United also saw their hopes of escaping the bottom three shrink as they slipped to a 3-1 defeat at the hands of Police United at home.
Elsewhere, sixth-placed Army United moved just three points short of BEC Tero Sasana in fifth by beating Rene Desaeyere's side 2-1 thanks to Mongkol Tossagri's 92nd-minute winner.
|Coach: S. Subpherm|
for P. Deeprom 73'
for B. Savage 90+2'
for N. Pol-udom 90+3'
|Bale: I´ll never forget this year|
|Griezmann: I deserve Best Player in Europe Award|
|No surgery for Ayew as West Ham target December return|
|Villarreal did all they could to make it through - Escriba|
|Spalletti rues lack of Roma discipline|
|Conte: Chelsea must learn to kill matches|
|Watford and West Brom crash out of League Cup|
|My longest 90 minutes as a coach - Rodgers|
|AFC Champions League: Goalless draws leave quarter-finals on a knife edge|
|Klopp hopeful over Can injury|
|Champions League play-offs: Nine-man Roma crash out as Monaco edge Villarreal|
|Henderson hails ´outstanding´ Mane after Burton thrashing|
|Chelsea 3 Bristol Rovers 2: Conte´s side survive scare thanks to Batshuayi double|
|Hapoel Be´er Sheva 2 Celtic 0 (4-5 agg): Visitors survive Israeli scare|
|Burton Albion 0 Liverpool 5: Sturridge at the double in Reds rout|
|Leverkusen sign Austria star Dragovic|
|Sakho in the clear as WADA opt against appeal|
|Enyimba 3 Mamelodi Sundowns 1: Udoh brace secures CAF Champions League win|
|Pulisic and Ramos on target as Dortmund wrap up Bundesliga preparations|
|Calleri hoping for Tevez advice|
|Defour hoping for Belgium recall|
|Alaba warns against complacency as Bayern begin Bundesliga defence|
|Bravo arrives in Manchester ahead of City move|
|Dyche backs Gray after striker´s apology for homophobic tweets|
|Gray charged by FA over homophobic tweets|
|Pique: Olympic gold proves Neymar is one of world´s best|
|Marin makes Olympiacos move|
|Zidane arrival the catalyst for one of my best seasons - Ronaldo|
|Moyes ´worried´ about Mannone elbow injury|
|Sidibe rejected Arsenal over playing-time fears|
|Guardiola: Toure could feature against Steaua|
|Hernandez out for two weeks after falling down stairs|
|Bravo nearing City move, admits Guardiola|
|Ballack impressed by Dortmund signings but still backing Bayern|
|Lucescu questions De Boer tactics|
|Milan reject Chelsea bid for Romagnoli|
|Dortmund know how to treat Gotze - Ballack|
|Shevchenko: Bacca must improve consistency|
|´If you heed 100 idiots you will go crazy´ - Bauza on Messi return|
|Valdano relieved over Messi U-turn|
|Nordfeldt in line for loan move after signing fresh Swans deal|
|Dante joins Nice from Wolfsburg|
|De Boer expects fierce fight for Barca number-one spot|
|Newell´s confident over Messi return|
|Stoke confirm Jones interest|
|MLS ´attractive´ to Rooney - Timbers owner|
|Burke re-signs with West Ham|
|Sassuolo rejected Balotelli - CEO|
|Valencia coach Ayestaran rules out Mustafi sale|
|Allardyce plans Guardiola talks over Hart|
|Cahill warns rivals over City attack|
|Allardyce open to Terry England return|
|Drogba dismisses Villa rumours|
|Tuchel pleased despite Dortmund wastefulness|
|Stam´s Reading sign Manchester United youngster Blackett|
|Champions League place main objective for Rodgers|
|Eintracht Trier 0 Borussia Dortmund 3: Kagawa at the double as Tuchel´s men stroll|
|Escriba urges cool heads in Monaco|
|Cherchesov sets bar high for Russia|
|Tite defends Neymar´s captaincy credentials|
|Ancelotti wowed by fit-again Martinez|
|Spalletti: If Roma players are afraid, I don´t want them|
|Klopp laments Origi´s absent rhythm|
|Barcelona let Neymar stay in Brazil ahead of qualifiers|
|De Jong brothers joins forces at PSV|
|Rudiger returns to training|
|Liverpool transfer talk frustrates Klopp|
|Klopp demands final third improvements|
|Everton loan Galloway to West Brom|
|Manchester United loan Borthwick-Jackson to Wolves|
|Braithwaite to snub Premier League interest to stay at Toulouse|
|Strachan leaves out McCormack, Rhodes|
|Napoli plan to limit media commitments|
|Taarabt eager to make Marseille switch|
|Kruse suffers knee ligament injury|
|Rummenigge expects Ribery to be targeted|
|Delaney: Benteke is not Messi, he needs service|
|Ballack urges patience with Pep over City project|
|James happy at Real Madrid - Zidane|
|Harper backs Phelan for permanent Hull role|
|Flexibility the key for Allardyce|
|Allardyce concerned over Hart situation|
|De Bruyne praises Sterling reaction|
|Cavani vows to improve strike rate|
|Britton signs Swansea extension|
|Higuain motivated by ´fat´ comments|
|Conte perplexed by Costa criticism|
|Drinkwater poised to sign new Leicester contract|
|Bobo completes Sydney move|
|Bilic: You can´t count on Carroll|
|MLS Review: Dempsey´s Sounders sink rivals Timbers|
|Zidane: Important year for Bale|
|Galaxy star Rogers alleges homophobic abuse|
|Vieira: Pogba just needs to be himself|
|Bacca: I made a promise to Milan|
|Angry Handanovic critical of Inter|
|Gameiro: Atletico must win at home|
|Klopp: I´d be an idiot if I made a panic buy|
|Simeone: Draw leaves a bad taste in my mouth|
|Montella: Milan must win back fans|
|Asensio revels in goalscoring LaLiga debut for Madrid|
|Atletico Madrid 1 Alaves 1: Hosts denied in dramatic finale|