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Siem Willems is a 198 cm (6'6") basketball small forward from Netherlands, born in 1995 (age 31). In 2016-2017, Siem Willems played 3 games for ZZ Leiden (Netherlands D1 - DBL), averaging 1.3 points and 0.7 rebounds in 3.0 minutes per game on 100.0% field-goal shooting. Scouting4U covers 2 seasons of Siem Willems's career (2015-2017), with 1 club.