Bristol head to Cardiff Blues on Saturday to face a Blues team who can still overhaul Bath at the head of Pool Four in the unlikely event of Todd Blackadder 's men losing at home to Pau .
Bristol can no longer qualify for the knockout phase .
Bristol , who can no longer qualify for the knockout phase , head to Cardiff Blues on Saturday to face a Blues team who can still overhaul Bath at the head of Pool Four in the unlikely event of Todd Blackadder 's men losing at home to Pau .