How Celtics’ clutch defense won Game 4 to sweep Pacers, advance to NBA Finals

Boston Celtics guard Derrick White attempts his game-sealing 3-point shot during the fourth quarter of Game 4 of the Eastern Conference Finals on Monday at Gainbridge Fieldhouse in Indianapolis. (Trevor Ruszkowski/USA TODAY)

The Boston Celtics celebrate their series win against the Indiana Pacers after Game 4 of the Eastern Conference Finals on Monday at Gainbridge Fieldhouse in Indianapolis. The Celtics will play the winner of the Dallas Mavericks and Minnesota Timberwolves in the NBA Finals, beginning June 6 in Boston. The Celtics will be playing for their 18th championship. (Trevor Ruszkowski/USA TODAY)

INDIANAPOLIS — The Boston Celtics are returning to the NBA Finals for the second time in three seasons, sweeping the Indiana Pacers and winning Game 4 105-102 on Monday.