A'Ja Wilson led the way for the United States as they saw off host nation Japan 86-69 at the Tokyo Olympics, while China and Belgium booked their places in the quarter-finals.
Team USA are six-time defending champions, though they were made to work by their opponents in Saitama before their height proved decisive.
Now on a 51-game winning streak at the Olympics, Team USA top Group B on four points from their two games so far at the Games.
Wilson was the top scorer with 20 points, while she also contributed 10 rebounds and three assists. Support arrived from Breanna Stewart (15 points) and Brittney Griner (15 points).
It was by no means a comfortable victory, however, having edged out Nigeria 81-72 in their first match.
"Just communication. One, we're getting used to the ball. And then two, just working on making sure we're just all in for each other and understanding the personnel a little bit better," explained guard Jewell Loyd when asked how the team were looking to improve as the tournament goes on.
"Taking a breath. We've played a little fast in other games so just trying to get a rhythm for us, take it slow and play our basketball."
Only Wilson scored more points than Japan's Maki Takada, but the hosts were simply physically outmatched.
"[Team USA] are really superstars," said Evelyn Mawuli. "They know how to play and they're tall and we're small, so we have to run faster than them. So that was a bit difficult, but it was fun."
CHINA SNATCH LATE WIN TO SEAL QUARTER-FINAL SPOT
China and Belgium are sure of their places in the last eight.
That is because of a last-gasp win for China against Australia, avoiding overtime in dramatic fashion to clinch a 76-74 triumph in Group C.
China, who were led by 20-point Wang Siyu, were 11 ahead at one stage in the final quarter, but that deficit was cut down by a resurgent Australia.
However, with 0.6 seconds left, Li Yueru was fouled under the basket. She made both free throws to seal victory and progression into the quarters.
In the process, Belgium's progress was also secured. They beat Puerto Rico 87-52 in the first of Friday's matches.
GARNIER PROUD OF FRANCE REACTION
Elsewhere, France bounced back from an opening defeat to Japan with an 87-62 victory over Nigeria in Group B.
Five players made into double figures for points for the French team, with Sandrine Gruda topping the charts with 14, adding nine rebounds and three assists.
"It was necessary after the defeat against Japan to have a good reaction. I am proud of my team because they did and they all played very hard defence," France coach Valerie Garnier said.
"This is necessary against Nigeria because they fight a lot. After we did this very good job, we tried to make the biggest gap possible, so 25 points was a good result for us."
There were no excuses for Nigeria coach Otis Hughley Jr, who said: "We just got beaten really bad. Offensively we were flat and we couldn't score. You can't play that way against the number five team in the world."
Bayer Leverkusen 2-3 Leipzig: Visitors fightback halts unbeaten streak for Alonso's side
Bayer Leverkusen suffered their first defeat in 36 Bundesliga matches, as Leipzig came from behind to stun Xabi Alonso's side 3-2 at BayArena.
Lois Openda struck twice for Marco Rose's, who recovered from 2-0 down to make it two wins from two and move to the summit of the table.
It looked like business as usual for the reigning Bundesliga champions when they scored twice in the last seven minutes of the first half through Jeremie Frimpong and Alejandro Grimaldo.
However, Leipzig replied deep into first-half stoppage time with Kevin Kampl reducing the deficit.
Openda then brought the visitors level in the 57th minute, before a stunning long-range strike completed the turnaround 10 minutes from time, condemning Leverkusen to their first league defeat in 15 months.
Data Debrief: Leverkusen's long streak comes to a shuddering halt
Leipzig became the first side to beat Leverkusen in a Bundesliga match since Bochum achieved the feat a staggering 462 days earlier.
The visitors have begun a Bundesliga season with two wins from two for only the second time, also doing so in 2019-20.
They are also now unbeaten in 13 league matches, their longest such streak since Rose took charge.
As for Leverkusen, their invincible streak is officially history, as is their 29-game unbeaten run on home soil.
'We really let ourselves down' - Coleman slams Everton after late Bournemouth collapse
Seamus Coleman acknowledged Everton "really let ourselves down" and must "look at ourselves in the mirror" following their spectacular late collapse against Bournemouth.
Sean Dyche's side, who were seeking their first points of the season, led 2-0 in the 87th minute at Goodison Park through goals from Michael Keane and Dominic Calvert-Lewin.
However, the hosts were undone by three crosses in the latter stages, with Antoine Semenyo pulling a goal back and Lewis Cook levelling, before Luis Sinisterra completed a sensational turnaround in the sixth minute of stoppage time.
Boos rung around Goodison Park as the Toffees remained pointless and rooted to the foot of the Premier League table, and Coleman echoed the supporters' frustrations.
"We really let ourselves down in front of our fans," the skipper said. "We cannot take our foot off the gas at this level. Unfortunately, we did that.
"We cannot be conceding the goals that we did. We have to look at ourselves in the mirror."
Meanwhile, Dyche bemoaned the lack of responsibility amongst his players, as they became the first side in Premier League history to lose a game after leading by two or more goals in the 87th minute.
"We did so much right until they scored their first goal," the Everton head coach said. "The game should have been out of sight. We conceded one and then threw it away. I can't put my finger on it right now.
"They kept raining it forward and got their reward in the end. They were playing it forward and crossing it into the box, and we didn't deal with it. Simple stuff, but we threw it away. It is the third game we have thrown away this season.
"Everyone was looking at someone else to deal with things and that is when there is trouble. You could see the body language change. You have to see games through, and we have enough experience to do that, but today we didn't."
Bournemouth boss Andoni Iraola added: "It was the worst game we played this season. Everton deserved to win today, but the players kept pushing.
"I always have hope because this team has spirit. We have done it before and had some good comebacks. The spark of the first goal made us believe we could do it again."
Nottingham Forest 1-1 Wolves: Bellegarde beauty earns visitors first point
Wolves earned their first point of the Premier League season following a 1-1 draw with Nottingham Forest.
Chris Wood's towering header was cancelled out by Jean-Ricner Bellegarde's stunning strike as the spoils were shared at the City Ground.
The hosts took the lead in the 10th minute as Wood rose to nod home from Elliot Anderson's corner.
However, the visitors were level just two minutes later in spectacular fashion, with Bellegarde firing a stunning long-range volley into the roof of the net.
Gary O'Neil's side had Sam Johnstone to thank after the break, with the debutant producing a strong hand to deny Wood his second goal of the game.
Matheus Cunha curled a shot just wide while the offside flag denied Wood later on, with Forest unable to snatch victory but extending their unbeaten start to the campaign.
Data Debrief: Wolves end losing streak while Wood matches Collymore
After opening the season with two defeats and eight goals conceded, Wolves stopped the rot with a welcome point against their Midlands rivals, while ending a five-game Premier League losing streak in the process.
Meanwhile, Forest remain unbeaten in their opening three games of a top-flight season for the first time since 1995-96.
Heading his side into the lead, Wood became only the second Forest player to score in both their first two home matches in a Premier League season since Stan Collymore 30 years previously.
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