Jayson Tatum scored 46 points, outdueling Giannis Antetokounmpo and making sure there wouldn’t be another Milwaukee Bucks fourth-quarter comeback, and the Boston Celtics beat the defending champions 108-95 to force a seventh game in their Eastern Conference semifinal. The third straight victory for a road team in this series forced a Game 7 on Sunday in Boston. The winner heads to Miami to begin an East finals matchup with the top-seeded Heat on Tuesday. Antetokounmpo had 44 points, 20 rebounds and six assists.