Louis Rees-Zammit: Why is NFL transition so hard to accomplish?

Any NFL players who have come through the North American education system have grown up with American football and had years to grasp the intricacies and nuances of the sport.

Osi Umenyiora and Efe Obada are two of those who have been born overseas and proved it is possible to pick up the game late and still succeed, but you must be able to understand a playbook.

Christian Scotland-Williamson played rugby union either side of a two-year stint on the Pittsburgh Steelers' practice squad and has since become a barrister.

During a video call with BBC Sport, the 32-year-old held up two law books - each more than an inch thick - and said: "Learning both of these was easier than learning an NFL playbook, which is absolutely absurd.

"Doing all that [legal training], I still wasn't working as hard as I had to when I went to the NFL. It recalibrates what you think is hard."

Speaking to the BBC after beginning his NFL journey in 2018, Christian Wade held his hands several inches apart and said "the playbook's like this".

"It is quite intimidating but there's a method to it," he added. "You have to learn the terminology and how to dissect it so that you can retain the information, then in a few hours put that into practice. Then do the same in the afternoon and the next day."

Before Rees-Zammit called time on his NFL adventure, he would have been learning his third playbook in 18 months having spent the 2024 off-season with the Kansas City Chiefs and the 2024 season with the Jacksonville Jaguars, who then appointed a new head coach in January.

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