Kammala wannan jumla: Mantell ya fara wasan sa na kasa da kasa a ranar 10 ga Fabrairun 2003. Ya kasance memba na tawagar Ingila da ta yi gasa a gasar cin kofin duniya ta 2006 da 2010. Ya kuma kasance wani bangare na tawagar lashe gasar a
2009 EuroHockey Championship kuma ya zo na uku a 2011, kuma ya kuma yi gasa a gasar zakarun Turai a 2007, 2009 da 2011.