The favoured Swiss struck again through Ruben Vargas and Manzambi added another before Bosnia’s Ermin Mahmic scored to give the Bosnia fans something to cheer. Switzerland captain Granit Xhaka converted a penalty to wrap up the win.
The Swiss, who have four points and need one more from their final group game to guarantee a place in the Round of 32 as winners or runners-up, face Canada in Vancouver on Wednesday when Bosnia, who have one point, meet Qatar in Seattle.
