Atlanta Falcons NFL coach Dan Quinn is a big fan of the All Blacks, all because of a book he has read.
Quinn gave a thumbs-up to Legacy, a book detailing some of the philosophies and strategies that have made New Zealand's rugby union team one of the world's most successful sporting outfits.
"I've studied rugby from tackling and it's been a driving influence on our leverage tackling, using our shoulder to tackle, keeping our head out," Quinn said.
"So my interest for rugby was already there, and then when I found out more about their culture, what they stood for, how they had long-term success for years and years."