Kammala jumla mai zuwa: Grumier ya lashe lambar zinare a wasan kungiya a gasar zakarun duniya ta 2006 bayan ya doke Spain a wasan karshe. Ya cika wannan tare da abokan aikinsa Érik Boisse, Ulrich Robeiri da Fabrice Jeannet. Ya kuma kasance wani bangare na tawagar Faransa da suka lashe a 2010, 2011 da
Shekarar 2014. Ya lashe lambar azurfa a cikin taron épée na mutum a Gasar Cin Kofin Duniya ta 2010 da kuma Gasar Cin Kofin Duniya ta 2015.