The Boston Celtics won’t admit – at least not in the middle of a competitive playoff series with a title in mind – they are star stoppers. But look at what they did to Kevin Durant in the first round: 26.3 points per game on 38.6% shooting from the field and 33.3% on 3-pointers, all below his regular season averages. Now, look at what they’re doing to two-time Milwaukee Bucks MVP Giannis Antetokounmpo: 26 points per game, 38.5% shooting from the field and 16.7% on 3s, well below his regular season averages. “Guys are going to score their points, it’s moreso the percentages we’re keeping him to (and) limiting his paint points basically,” Celtics coach Ime Udoka said on Thursday ahead of Saturday’s Game 3 in Milwaukee.