Rees-Zammit has been getting to know his Kansas City Chiefs team-mates at rookie minicamp, having been given a three-year contract with the reigning Super Bowl champions.
The former Wales wing is competing with the rest of the Chiefs’ off-season squad to earn a spot on their 53-man roster for the 2024 season.
As well as learning the new skills required to succeed in the NFL, Rees-Zammit said he is spending every minute getting to grips with the Chiefs’ playbook, which is “like learning a new language”.
“I’ve been trying to learn as much football as I can,” said Rees-Zammit.
“Every team has their own playbook and a certain language they use.
“You probably learn up to 1,000 plays throughout the season in the NFL, which shows how much there is to learn.
“Whereas in rugby, you probably learn 60, so it’s something I’m completely new to, but I’m loving learning it.”