Daiki Iwamasa (岩政 大樹,Iwamasa Daiki; born 30 January 1982) is a Japanese professional football manager and former player, who was most recently the manager ofJ2 League club,Hokkaido Consadole Sapporo. He also played for theJapan national team until 2011.
Iwamasa started his professional career atKashima Antlers where he later became one of the club's longest serving players. He became a regular player at center back from late first season. The club won the title inJ1 League for three consecutive seasons (2007–2009) which is the first time in J1 League history. He was also elected in theJ.League Best XI for three consecutive years. The club also won2007,2010 Emperor's Cup,2011 and2012 J.League Cup however his opportunity to play decreased in 2013 and he left the club end of 2013 season.
In 2014, Iwamasa moved to Thailand to joinBEC Tero Sasana which he helped the club to win the2014 Thai League Cup where he scored a goal in the final that ended in a 2–0 victory.
Iwamasa was the captain of the Japan team that won the2003 Summer Universiade held inDaegu, South Korea, where he scored a goal in the final of the tournament. He received the first call-up forJapan national team in 2008 by newly appointed coachTakeshi Okada.
On 10 October 2009, he made his international debut in a friendly match againstScotland. He was also one of the final 23 Japan national football players participating in2010 FIFA World Cup in South Africa although did not play any minute during the tournament. After the 2010 FIFA World Cup, in January 2011, he was selected Japan for2011 AFC Asian Cup by new managerAlberto Zaccheroni. At the 2011 AFC Asian Cup, he played in four matches and Japan was the eventual champions. He played eight games for Japan until 2011.[1]
For the 2022 season, Iwamasa became the assistant manager ofKashima Antlers and took charge of a number of games whilst new managerRené Weiler awaited entry to the country due to COVID-19 quarantine restrictions.[3] In August 2022, it was announced that Iwamasa would be promoted to manager of Kashima Antlers following the departure of Weiler.[4]
The first game in the charge was 2-0 home win byJ1 League againstAvispa Fukuoka in 14 August 2022. But the in the nine games after. only one win against Vissel Kobe inEmperor's Cup, the team was knocked out by second tier teamVentforet Kofu after defeat by 1-0. Ending the season in fourth place, three points behind of theAFC Champions League slots occupied bySanfrecce Hiroshima.
The 2023 Season starts with an away victory overKyoto Sanga by 0-2. The first match at home was a defeat against current runners-upKawasaki Frontale by 1-2. Following this, the team collected mixed results in the Emperor's Cup. They were knocked out by the defending champions, Ventforet Kofu for a consecutive season after a 1-1 draw, the team lost 10-11 in the penalty shootout. Following the end of the campaign, Antlers won the last match of the competition against the relegated teamYokohama FC.), ending the aspirations for qualification to AFC Tournaments after a 3-1 defeat to Vissel Kobe.[citation needed]
On 5 December 2023 the board announced the Iwamasa's contract was not renewed for the 2024 season.[5]
On 11 January 2024, Iwamasa was named as the manager ofV.League 1 clubHà Nội.[6] He lost his firstV.League 1 match, 2–0 at away toDong A Thanh Hoa on 18 February.[7] He resigned his role as head coach on 8 July.
On 12 December 2024, Iwamasa was announced as manager of newly relegated clubHokkaido Consadole Sapporo for the2025 J2 League season.[8] Due to the club under-performing in the second tier and finding themselves in 11th place, in August 2025 Iwamasa was dismissed from his role.[9]
^"岩政 大樹監督 退任のお知らせ" [Iwamasa left the club before the expiration of his contract.].www.antlers.co.jp (in Japanese). 4 December 2023. Retrieved5 December 2023.
