1-dii Luulyo, 2009, wuxuu heshiis afar sano ah oo 6.8 milyan oo doolar ah la saxiixday kooxda Tampa Bay Lightning. Bishii Luulyo 19, 2010, Walker waxaa loo beddelay Philadelphia Flyers, oo ay weheliso doorashada wareega 4aad ee 2011 NHL Entry Draft
, isaga oo ku bedelaya weeraryahanka Simon Gagne.