The Lakers picked up their first preseason win — and the first of JJ Redick’s coaching career — against the Milwaukee Bucks on Thursday night at Fiserv Forum after going on a 31-4 run in the final quarter.

With Austin Reaves sidelined because of ankle soreness — which Redick said the team isn’t concerned about — Max Christie (eight points on 3-of-4 shooting) stepped into the starting lineup alongside LeBron James, Anthony Davis, Rui Hachimura (14 points, five rebounds) and D’Angelo Russell (six points, five assists).

But it was the Lakers’ bench, led by first-round pick Dalton Knecht (13 points, 8 rebounds, 4 assists) and Exhibit 10 contract-signee Quincy Olivari (11 points, five rebounds) who orchestrated them to a 107-102 comeback victory over the Bucks.

The Lakers scored 20 unanswered points to take a 94-89 lead with fewer than five minutes left in the game after trailing by as many as 15 points (89-74) with 9½ minutes left, and both teams mostly using end-of-bench players for significant parts of the second half.

Olivari knocked down a trio of 3-pointers during the Lakers’ run.

“Quincy just completely changed the game,” Redick said postgame. “To me, and I told our guys this (afterward), what he did is the blueprint for what we’re asking for a few of our players in terms of just picking up fullcourt, being disruptive, taking time off the shot clock. He just executed exactly what we want from someone in his position.”

James played only in the first half, finishing with 11 points, 6 rebounds and 4 assists in 16 minutes, similar to his preseason debut against the Phoenix Suns on Sunday night.

Davis had 11 points, 8 rebounds and 3 blocked shots in 25 minutes, playing early in the third quarter before sitting out the final 18½ minutes.

The Bucks, who led 58-52 at halftime, were led by Giannis Antetokounmpo (20 points, 7 rebounds, 2 blocked shots) and Bobby Portis (23 points on 8-of-9 shooting off the bench). Milwaukee didn’t play its starters in the second half.

The Lakers’ Cam Reddish, Gabe Vincent (eight points) and Christie were on minutes restrictions.

Redick said of Reaves: “Just thought it’d be good to give him (time). He’s been in the gym with us for the majority of September and played in the second half Sunday night. Thought it would be good for him to have the night off.”

Thursday’s matchup reunited familiar faces.

Bucks coach Doc Rivers was the Clippers coach when Redick played for them from 2013-17. Despite previous public criticisms, both said there are no bad feelings between the two.

“We’re fine,” Redick said before the game. “I don’t carry beef with people.”