San Francisco 49ers wide receiver Kyle Williams has hailed the influence of Anquan Boldin following his arrival at the club in the off-season.
The 32-year-old was traded to Jim Harbaugh's side from Baltimore Ravens for a sixth-round draft pick earlier this year, after beating the 49ers in Super Bowl 47 in February.
Williams told SI.com: "Q has been so good with the younger guys, trying to teach them how to be professionals.
"He's not just teaching them what to learn, but how to learn it, how to learn concepts and how you can see certain things in coverages.
"I think his whole mentality, his whole approach to this game is something we all can learn something from. He's so serious about it. He doesn't play around."
San Francisco open their regular season against Green Bay Packers on September 8.
