While being 4-0 in Group A at the 2016 Rio Olympics, the previous two games have been a struggle for the United States of America.
After seeing off Australia in a tightly contested outing on Wednesday night, they were pushed all the way on Friday by a Serbian outfit led by Denver Nuggets youngster Nikola Jokic.
The defending champions raced out to an 18-point lead in the first quarter and many could have been forgiven for thinking it was over. However, the Eastern European nation had other ideas. They pulled the game back, dominating the final quarter, and losing 94-91.
It was an uncomfortable final ten minutes for the nation that has won six of the previous eight gold medals. And ahead of the knockout stages, it's not looking as straightforward as many had envisioned.
Paul George, who scored 12 points as the States maintained their unbeaten record, believes the issue is the lack of team basketball, with players too often relying on their individual brilliance and opting for isolation plays.
Directly after the game on NBC, the Indiana Pacers All-Star said: "We just have to start getting some movement. We're relying on our natural talent so much. It's so easy to guard us. Teams are just loading up and watching us play one-on-one."
The USA are still expected to top the podium in this competition, but talks need to be held between the players. There are evidently problems that need addressing. If they played with half the chemistry of Australia or Serbia, they would run away with it. But chemistry doesn't appear overnight.