The Bulls clawed their way to the eighth and final playoff spot in the East.
James was unfazed by the Pacers' fourth quarter fightback after the Cavs held on to take a 2-0 lead in the best-of-seven series.
The four-day tournament starts on Friday.
The Hawks, who were short-handed when they shocked the Cavs in Cleveland earlier on Friday, never led until overtime.
Since notching his 41st triple-double of the season on Tuesday, Westbrook had twice fallen short as he vied for number 42.
"We are getting better, and I'm just thankful to see that," said Jeremy Lin.
Stephenson was playing his first home game as a Pacer since 2014 after rejoining the club on Sunday.
The last time James failed to score in double digits was on January 5, 2007.
James finished with 41 points, 16 rebounds and 11 assists for his 11th triple-double of the season.
He brings over 19 years’ experience to the Oilers, one of three players who the defending champions are adding to their roster this year
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