About Ronald de Boer
Ronaldus de Boer is a Dutch former professional footballer who played as a right or attacking midfielder or right winger. He played for the Netherlands national team as well as a host of professional clubs in Europe. He is the twin brother of Frank de Boer. The majority of his success as a football player was with Ajax. He works as the Ajax A1 assistant manager. De Boer's first youth club was De Zouaven in Lutjebroek where he played before being selected for the Ajax youth programme in 1983. When Louis van Gaal left Ajax for Barcelona in July 1997, Morten Olsen became the new Ajax manager, and De Boer won a fifth Eredivisie title in 1997–98 and also won the 1997–98 KNVB Cup. De Boer made his debut in a Scottish League Cup tie against Aberdeen on 6 September 2000, and scored his first goal for the club in a UEFA Champions League tie against Sturm Graz. In his first spell at Ajax from 1988 to 1991, he won the Eredivisie title in 1989–90 under manager Leo Beenhakker.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.