The 2017-season in Thailand kicks off on February 11th, and UDFC plays in Thai League 3 (T3) Upper region.
Thai League 1 (T1) and Thai League 2 (T2) have 18 teams each, while there is 14 teams in the Upper region and 15 teams in the Lower region of Thai League 3.
Thai League 4 (T4) have 6 regions with 62 teams, including reserve teams for 8 of the clubs in Thai League 1.
3 teams will get relegated from T1 and T2, while 3 teams will be promoted from T2 and T3. Due to 3 teams “missing” in T3, only 1 team will be relegated, while 4 teams will be promoted from T4.