Young receiver signed a one-year contract with the German vice-champion and national Cup winner.
Grobelna is 20 years old and since 2012 she played for Asterix Kieldrecht with whom she won Belgian league and Cup in the last season.
In the past two years she was elected as the player of the year in her country and with Stuttgart, she will compete in the Champions League.
Grobelna is currently with the Belgian national team at the 2015 European Games in Baku (Azerbaijan).
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