Qatar have already qualified for the knockout stage of the Asian Cup but they will not ease up in their final group game against China as they owe it to the home fans to finish with maximum points, coach Marquez Lopez said on Sunday. The hosts beat Lebanon and Tajikistan to guarantee top spot in Group A and Lopez said he would strike a balance between going for a third straight win and keeping his squad fresh and injury-free for the next round. “We have great respect for the competition and we are aware we should win, but we should also do what is convenient for us, so we’ll use the right play…