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Sonny Silooy
	Silooy in 1987
Personal information
Full name	Jan Jacobus Silooy
Date of birth	31 August 1963 (age 61)
Place of birth	Rotterdam, Netherlands
Position(s)	Defender
Youth career
	Zilvermeeuwen
	ZVV
Senior career*
Years	Team
1980–1987	Ajax
1987–1989	Matra Racing
1989–1996	Ajax
1996–1998	Arminia Bielefeld
1998–2000	De Graafschap
Total
International career
1983–1993	Netherlands
Managerial career
2003–2008	Ajax (youth)
2010	Dayton Dutch Lions
2011–2014	D.C. United (Assistant)
2014–2015	KNVB (Assistant U18)
2015	Sparta Rotterdam (U17)
2015	KNVB (Assistant U19)
2015–2016	Al Shabab (U19)
2020–2022	Sharjah FC (Director Youth Development)
2024-2026	Ajax (Assistant Woman’s team)
	*Club domestic league appearances and goals

Jan Jacobus "Sonny" Silooy (born 31 August 1963) is a Dutch former professional footballer and football manager. He is currently the assistant coach with AFC Ajax. His last managing post was for the under-19 team for United Arab Emirates club Al Shabab. His most successful time as a player was in his period with Ajax. He won seven Eredivisie titles, four KNVB Cups, three Johan Cruyff Shields, one UEFA Cup Winners' Cup, one UEFA Cup, one UEFA Super Cup and one Intercontinental Cup.

Club career

Silooy was born in Rotterdam. He played as a right or central defender and is one of the legends of Ajax, where he made his debut on 3 May 1981, playing over 250 league games for the Amsterdam club in two separate periods. Silooy also played for Matra Racing, Arminia Bielefeld,^[2] De Graafschap and the amateurs of GVV Unitas from Gorinchem. He played in the 1996 UEFA Champions League Final against Juventus, but missed a key penalty in the shootout which Ajax ultimately lost.^[3]

Silooy, a member of the Netherlands national team's squad at the 1983 FIFA World Youth Championship, obtained 25 caps,^[4] including eight appearances in Euro 88 qualifying, but never played in a major international competition.

Silooy coached of the Jong Ajax youth academy and juniors team.^[5] In 2010, he became the head coach of the new club Dayton Dutch Lions.

He left Dayton Dutch Lions to become an assistant coach with the Major League Soccer club D.C. United.^[6] In 2015, he was appointed as head coach of Al Shabab under 19. He joined Ajax's women's team in 2024 with new head coach Hesterine de Reus.^[7]

Ajax