It was announced at the end of the 2010 season that the TPL would increase the number of teams for the start of the 2011 Thai Premier League season.
Therefore, playoff games were arranged to promote more teams for the Regional League Division 2 and relegate less teams from the TPL.
During these games, Nakhon Pathom were banned and therefore will fail to take their place in Division 1 for the next two seasons.
This did mean that the league would only feature 17 teams for the season, but with less than 3 weeks before the start of the league campaign another round of playoffs was used to promote one more side, Saraburi.
Updated to games played on January 26, 2012Source: Thai Premier LeagueNotes:† Team played previous season in Regional League D2.‡ Team played previous season in Premier League.