Herald Celtics season preview coverage Blake Griffin sidelined with broken kneecap Best defensive teams in NBA history NBA capsules for the Atlantic Division John Kuester is just one of those guys you’ll like to root for Celtics go to great depths Defense won’t rest 1st stop: Cleveland Danny Ainge’s age-old challenge Kevin Garnett back in the flow Sources: Glen Davis’ thumb hurt in off-court scrap Globe Previews and predictions They’ll try not to get tripped up Cava...