Alessandro Minelli (disambiguation)  Alessandro Minelli is an Italian biologist and a professor emeritus of Zoology at the University of Padova. Alessandro Minelli may also refer to:       Alessandro Minelli (footballer, born 1970)  Alessandro Minelli (born 28 November 1970) is a retired Swiss football defender.   2019 Thai League 4  The 2019 Thai League 4 is the 19th season of the Thai League 4, the fourth-tier professional league for association football clubs in Thailand, since its establishment in 2006 as the regional league division 2, also known as Omsin League due to the sponsorship deal with Government Savings Bank (Omsin Bank). A total of 60 teams would divided into 6 regions. Green Zone: 2019 Thai League 4 Northern Region Orange Zone: 2019 Thai League 4 Northeastern Region Yellow Zone : 2019 Thai League 4 Eastern Region Pink Zone: 2019 Thai League 4 Western Region Red Zone : 2019 Thai League 4 Bangkok Metropolitan Region Blue Zone: 2019 Thai League 4 Southern Region    The number of teams in 6 regions including 10 teams in the Northern region, 13 teams in the Northeastern region, 8 teams in the Eastern region, 9 teams in the Western region, 7 teams in the Southern region, and 13 teams in the Bangkok metropolitan region. The reserve of Thai League 1 and Thai League 2 teams could competed in Thai League 4 as team (B) but they could not promoted or relegated. If the reserve team finished in the bottom half of their region's league table, they would be suspended in the next season. The winners and runners-up (except reserve teams) of each regions will advance to the champions league stage to finding 4 teams promoting to the 2020 Thai League 3. Meanwhile, the last placed (except reserve teams) of each regions will relegate to the 2020 Thailand Amateur League. The champions league stage is the next stage from the regional stage. 1st and 2nd places of each zone qualified to this stage by featured in 2 groups. Teams from Northern, Northeastern, and Eastern regions would have qualified to the upper group. Meanwhile, teams from Western, Southern, and Bangkok Metropolitan regions would have qualified to the lower group. Winners and runners-ups of the upper and lower groups would promoted to the 2020 Thai League 3. "Muang Loei United won 7–3 on aggregate." Champion of Upper group and Lower group in "Group Stage round" pass this round. Winner of Champion round get champion of 2019 Thai League 4    "2–2 on aggregate.