CLEVELAND — LeBron James knew what he left behind when he bolted to Miami five years ago.

He broke hearts at home, where generations of Cleveland fans only know championships through stories told by their fathers, yellowed newspaper clippings or grainy black-and-white film. James had to go back.

“I’m a guy who believes in unfinished business,” he said.

With four more wins, he can end a half-century of sports misery.

James scored 23 points, Kyrie Irving provided a boost after missing two games and Cleveland reserved a spot in the NBA Finals with a 118-88 victory over the Atlanta Hawks on Tuesday night to win the Eastern Conference title.