PHILADELPHIA, Pennsylvania, May 23 (AFP) - Indiana Pacers completed a four-game sweep of the Eastern Conference semi-final basketball series here on Sunday scoring a 89-86 win over the Philadelphia 76ers. The Pacers did not panic during an awful fourth quarter and made all the key plays down the stretch to secure victory over the 76ers. Reggie Miller scored 23 points, including a running banker that gave the Pacers the decisive lead with 1:31 to play. After missing their first 13 shots of the final period, Indiana turned the tables and held Philadelphia without a basket for the last 3:17. It was a familiar formula for the Pacers, who in all four games built big early leads, weathered a comeback by the pesky 76ers and relied on their huge advantage in post-season experience to put away the win. The first best-of-seven series sweep in NBA franchise history made Indiana the first team since the 1993 Chicago Bulls to go undefeated through the first two rounds. The Pacers returned to the conference finals for the fourth time in six years and await the winner of the series between Atlanta and New York.  