RNZ reports the basketballer is in New Zealand for the NBA off season and to launch the first of three training camps.
The seven-footer said it was emotional seeing his sister return from knee surgery and then go on to compete at the Games.
"Everybody says it's disappointing [she didn't win the gold medal], but it wasn't about the gold.
"She looked like she went out there and really enjoyed it. She just looked happy competing again. That's the biggest thing."