Johannes Martinus ("Jan") Siemerink (born April 14, 1970 in Rijnsburg, Zuid-Holland) is a former professional tennis player from the Netherlands. As a junior player, Siemerink was the Dutch 18-under champion in 1988. He also won the doubles title at the 1988 Orange Bowl junior championship in Florida. Siemerink turned professional in 1989. Over the course of his career he won four top-level singles titles (at Singapore in 1991, Nottingham in 1996, … Wikipedia
The definitive Wikipedia entry for Jan Siemerink. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Jan_Siemerink
Official website of the Davis Cup by BNP Paribas, the annual international team tennis competition for men. Details on players, ties, results and history of this ITF event, the largest annual international team competition in sport. Players www.daviscup.com/teams/player.asp?player=10001275
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