Philadelphia had struggled in their first two games with former NBA Most Valuable Player Joel Embiid sidelined by injury and newly acquired nine-time All-Star Paul George's Sixers debut delayed by a knee injury.

But Maxey made sure they got into the win column, shrugging off early shooting struggles to come through when it mattered.

Maxey made just two of six shots in the first half and missed his first seven attempts in the third quarter before finding his touch and drilled a 10-foot jump shot with 2.3 seconds left that gave Philadelphia a 79-78 lead going into the fourth quarter.

Maxey scored 14 points in a fourth quarter that featured 10 lead changes.

It went to overtime when Indiana's Tyrese Haliburton drained a three-pointer to tie it at 105-105 with 3.5 seconds left and Maxey was off target with a three at the buzzer.

Maxey made a three-pointer to open overtime and the Sixers never trailed. His big night came after he shot just 29.6 percent from the field over the first two games.

"I wasn't so much disappointed in my offense the last two games, our offense as a whole -- it was our effort," Maxey said. "I was letting my offense affect my effort defensively.

"Today I was just going extremely hard defensively, kind of got going and we benefitted from that."

Caleb Martin added 17 points and 12 rebounds. Kelly Oubre had 14 points and eight rebounds and Andre Drummond scored nine points with 17 rebounds.

Haliburton led the Pacers with 22 points -- one of seven Indiana players to score in double figures.

Wins for Portland, Brooklyn 

The Portland Trail Blazers and Brooklyn Nets notched their first victories of the young season, Portland downing the New Orleans Pelicans 125-103 and Brooklyn fending off Giannis Antetokounmpo and the Milwaukee Bucks 115-102.

Jerami Grant scored 28 points and Anfernee Simons added 27 as all five Portland starters scored in double figures.

DeAndre Ayton scored 17 and pulled down 12 rebounds for the Blazers, who never trailed in the second half.

CJ McCollum led the Pelicans with 27 points with Zion Williamson and Brandon Ingram contributing 14 apiece.

Portland's win came two days after the Pelicans pulled off a two-point victory after trailing the Blazers by double digits at halftime.

In Brooklyn, Cam Thomas scored 32 points and Dennis Schroder added 29 to power the Nets in their first win under Spanish coach Jordi Fernandez.

The Nets emerged from a back-and-forth third quarter with an 83-78 lead and pulled away in the final frame with help from 11 points from Thomas.

Two-time NBA MVP Antetokounmpo scored 22 points and grabbed 12 rebounds and Damian Lillard added 21 points for the Bucks, who have lost two straight after winning their season opener.

Oklahoma City improved to 3-0 as Shai Gilgeous-Alexander had 35 points, 11 rebounds and nine assists plus three steals and three blocks to lead the host Thunder over Atlanta 128-104.

Chet Holmgren added 25 points and Jalen Williams scored 20 for the Thunder while Trae Young led Atlanta with 24 points and 2024 NBA Draft top pick Zaccharie Risacher of France added 13 points for the Hawks.

At Golden State, James Harden had 23 points and 11 assists while Ivica Zubac had 23 points and 17 rebounds to lead the Los Angeles Clippers over the host Warriors 112-104.

Golden State star guard Stephen Curry, a four-time NBA champion, left the game in the fourth quarter with a left ankle injury.