The NBA says it is investigating an accusation that Oklahoma City Thunder guard Josh Giddey had an improper relationship with an underage girl. In a since-deleted post, an anonymous social media user said a girl who is seen with Giddey in videos and photographs was a high school junior at the time. The social media account has since been deactivated. Giddey is an Australian who turned 21 in October. "We're looking into it," Michael Bass, an NBA spokesman, said Friday. Giddey had no comment when questioned Friday at practice. "Yeah, I mean, I understand the question, obviously," he said. "But there's no further comment right now." When asked again, he said: "I get th...Keep on reading: NBA looks into Thunder’s Josh Giddey alleged relationship with underage girl