Rangsan Viwatchaichok (; ), born January 22, 1979), simply known as Aon (; ) is a Thai professional football manager and former player, who is the manager of Thai League 1 club Police Tero. He is a Thai retired professional footballer who plays as a defensive midfielder or a left back. He previously played for four other club teams in Thailand and Singapore. Rangsan is known for his set pieces. International career Rangsan has currently played 29 times for the senior Thailand national football team, and he has scored one goal in the process. Managerial career On 11 July 2013, BEC Tero Sasana sacked René Desaeyere and promoted Choketawee Promrut to be the club interim manager. Rangsan, who was the club captain, was also promoted to be the assistant coach. On 9 August 2015, Rangsan was promoted to be the interim manager of BEC Tero Sasana after the removal of Kenny Shiels. He had coached the club for three games before the appointment of Manuel Cajuda on 27 August. On 1 December 2015, he was promoted to be the interim manager again after the resignation of Manuel Cajuda. Rangsan managed the club in the last three games of 2015 season with the record of 2 wins and 1 loss. The club set to relegate to Division 1 according to the final standing but still remained in top league after the withdraw of Saraburi from the competition. FOX Sports Asia reported in an article that Rangsan was appointed head coach of Police Tero following the exit of Englishman Scott Cooper in 2018. International goals Managerial statistics Honours Player BEC Tero Sasana Thai Premier League: 2000 Thai League Cup: 2014 Krung Thai Bank Thai Premier League: 2002–03, 2003–04 Buriram United Thai Premier League: 2008, 2011 Thai FA Cup: 2011 Thai League Cup: 2011 Manager Police Tero Thai League 2 runner-up: 2019 Individual Thai League 1 Coach of the Month: October 2022 References External links 1984 births Living people Rangsan Viwatchaichok Rangsan Viwatchaichok Association football midfielders Rangsan Viwatchaichok Rangsan Viwatchaichok Rangsan Viwatchaichok Rangsan Viwatchaichok Rangsan Viwatchaichok Geylang International FC players Rangsan Viwatchaichok Rangsan Viwatchaichok Rangsan Viwatchaichok Singapore Premier League players Rangsan Viwatchaichok Rangsan Viwatchaichok Expatriate footballers in Singapore Rangsan Viwatchaichok 2004 AFC Asian Cup players Rangsan Viwatchaichok