Center Andris Biedrins has seen his role grow each season with the Warriors.
Warriors coach Don Nelson named guard Stephen Jackson and Biedrins team captains on Saturday.
The 22-year-old, whom Nelson first gave captaincy to at the end of last season, takes over full-time after signing a huge six-year contract extension this summer.
"I needed to be a leader on that team, and I was playing a lot of offense and trying a lot of new things," Biedrins said. "So I gained confidence on the offensive end and I think it will help."