Brittney Griner was back in court on Thursday after pleading guilty on Tuesday.
Last week, Griner pled guilty to smuggling a small amount of cannabis oil into Russia back in February.
The WNBA star did not testify on the third day of her trial, but character witnesses testified on her behalf.
Journalists were denied access to the courtroom. But the director of the team Griner plays for was allowed to take the witness stand.
"Our task today was to tell the court about her characteristics as an athlete, as a person — tell about how she played a big role in the success of the Ektaerinburg club and Russian women's basketball as a whole," said UMMC Ekaterinburg club director Maxim Rybakov.
"Today is the first day when we have seen our basketball player since February. Thank God, she feels well, looks good," Rybakov said.
Griner's Russian teammate Evgenia Belyakova testified that "Brittney has always been a very good teammate, so my role here is just to be with her, to support her."
"We miss her very much, we miss her energy," Belyakova added. "I was very happy to see her, and I hope this trial will be over soon and with a positive outcome."
Griner joked with Rybakov and Belyakova as she was led into court.
A team doctor said Griner had some medical conditions, including ADHD, that were alleviated by cannabis oil.
The doctor said ADHD may have caused her to be distracted when she was packing her bag and she didn't realize the cannabis oil was in there.
Griner, a two-time Olympic gold medalist and WNBA All-Star, is expected to be questioned by the prosecution and the defense when her trial resumes on Friday.
A judge ordered her detained until December 20.