When Markelle Fultz shot poorly in his second pre-draft workout with the Boston Celtics, Danny Ainge began exploring trades to move down from No. 1.

Sources tell Kevin O'Connor of The Ringer that the Celtics hoped to acquire a pick a few spots lower than No. 1 and other assets to flip in a separate trade for Paul George. The Indiana Pacers were in the process of trying to trade George, who was eventually dealt to the Oklahoma City Thunder on the eve of 2017 free agency.

But Jayson Tatum worked out for a second time and the Celtics began targeting to him.

“You saw the change of heart,” said one league source familiar with Tatum’s second and final workout with Boston. “Danny was like ‘OK, we’re getting this kid,’ and a few days later they made the trade.”

Tatum has become an All-Star this season and is arguably already a better player than George considering the latter's injury history.

“We just felt that Jayson had a chance to be a very, very good player that would fit well into our culture,” Ainge said.