After 4-5 loss to Sukhothai in a four-game losing streak, Bangkok United coach Mano Pölking announced his resignation and assumed responsibility, ending his six and a half years of Bangkok United career.
The 44-year-old Brazilian Polcin took over Bangkok United in June 2014. Two years later, when he competed with Mengtong United for the championship in 2016, he became runner-up because of the death of King Rama IX and the cut of the league, but successfully led the ball. The team was promoted from the midstream to a strong team, and also won the third and second place in the Thai Super League two years later. However, Bangkok United has always missed the championship, and the 2017 FA Cup final was also defeated by Chiang Rai United. In addition, Bangkok United played twice in the AFC qualifiers and lost to Johor and Hanoi FC at home respectively, failing to qualify.
This year, Bangkok United ushered in a five-game winning streak in the opening season, but after the rematch, the state fell back and ushered in a four-game losing streak. In the end, the young marshal resigned.