"Lou got into a rhythm. He got into a rhythm and we were going to ride it," Drew said. "I had to make a decision whether to bring (starters) Jeff (Teague) and Kyle (Korver) back, but the group that was in there, they had a good rhythm going and I did not want to do anything to disrupt that.
"So, we decided to ride Lou's hot hand and he made some really big baskets," he added. "He made some really big plays for us."
Atlanta turned 12 offensive rebounds — six by Horford — into 16 points.
Jeff Teague had 16 points but was replaced down the stretch by Harris, who was dropped out of the starting lineup in favor of Stevenson. Anthony Tolliver started in Smith's place, but it was Pachulia who played late and made assists on a couple key baskets.
"I thought the ball swung around a lot tonight, which shows the growth that this team has displayed over the past couple of games. Hopefully, that'll be something we can bottle up and use in the future," Williams said.
The Hawks hit four straight shots and scored 11 consecutive points to take the lead late in the first quarter, with Teague connecting on a pair of driving baskets and two free throws to make it 22-16. Atlanta's advantage reached as high as 10 after Williams' jumper in the first 2 minutes of the second quarter.
The Thunder outscored Atlanta 33-14 over the next 12½ minutes to lead 57-498 early in the second half.
"We had a lot of breakdowns. We can't start the game off in cruise mode. We've got to go take it," Durant said after his team fell to 1-2. "A team's not going to just let us feel our way into the game. We've got to go take the game.
"Early on, we just sat back and let them do whatever they wanted and that gave them confidence toward the end of the game," Durant added.
NOTES: Brenda Pantoja became the third woman to officiate an NBA game, following veteran official Violet Palmer and fellow rookie Lauren Holtkamp. Holtkamp, who made her debut in the Bulls-Cavaliers game on Friday night, are two of six non-staff officials who will work games this season. Pantoja, a former Arizona point guard who holds the school's career record for assists, has worked in the WNBA and NBA development league in recent years. ... The Hawks also won last season's only meeting. ... Durant, the three-time scoring champion, came in leading the NBA with 15.5 rebounds per game.