LOS ANGELES (AFP) — The Los Angeles Lakers, fueled by 30 points from ageless LeBron James, routed New Orleans 133-89 on Thursday to book a title showdown with upstarts Indiana in the inaugural National Basketball Association in-season tournament.

James, who will celebrate his 39th birthday on 30 December, was ruthlessly efficient, connecting on nine of his 12 attempts from the floor including four-of-four from three-point range.

He piled up his 30 points, with five rebounds and eight assists, in less than 23 minutes on the floor.

"Extraordinary" and "otherworldly" were two words Lakers coach Darvin Ham used to describe James, who also absorbed three charging fouls.

"He is the ultimate tone-setter," Ham said. "His energy, him sacrificing his body — three charges. He set the tone for us on both ends of the basketball court for us tonight."

He sat out the entire fourth quarter as both teams pulled their starters. The Lakers had taken full control, out-scoring the shell-shocked Pelicans 43-17 in the third period.

The first semi-final of the new tournament was an altogether different affair, with Tyrese Haliburton scoring 27 points to propel the Pacers to a 128-119 victory over the Milwaukee Bucks in a game that featured 16 lead changes — seven of them in the fourth quarter.

Haliburton added 15 assists, without a turnover, and Myles Turner scored 26 points and pulled down 10 rebounds.

Indiana, sixth in the Eastern Conference regular-season standings, had knocked out the East-leading Boston Celtics in the quarter-finals and followed up with another scintillating showing against the 2021 NBA champion Bucks, who were led by 37 points and 10 rebounds from two-time NBA Most Valuable Player Giannis Antetokounmpo.

The tournament has been a coming-out party for Haliburton and the Pacers, who came into Thursday's game averaging more than 128 points per game but whose NBA title hopes have been largely discounted.