Pascal Siakam scored 21 points and the Indiana Pacers tied an NBA playoff record by taking a 41-point halftime lead before routing the top-seeded Cleveland Cavaliers 129-109 on Sunday night for a 3-1 lead in the Eastern Conference semifinals. The Pacers can earn a second straight trip to the East finals with a victory Tuesday in Cleveland, where they won the first two games. Indiana jumped to an 80-39 lead at halftime and led by as much as 44 points. Donovan Mitchell had 12 points despite not playing in the second half because of a left ankle injury. Coach Kenny Atkinson said his All-Star guard would have an MRI exam Monday.
