Lawrence Okoye admits he's learning fast after attending his first rookie mini-camp as a potential NFL player.

The former-Olympic discus finalist has joined up with the San Francisco 49ers for their rookie training camp in Santa Clara, California.

And Okoye has revealed it's been a steep learning curve as he gets to grips with an NFL playbook and first-team drills, not to mention the new equipment.

"I got a couple of things wrong but I got more comfortable as it went on," Okoye said in the Daily Express.

"I'm learning as much as possible, as quickly as possible. The coaches are great with me."

The British Olympian is earmarked to play defensive end for the 49ers, and he took the lion's share of the reps earlier this week as his 49er teammates Quinton Dial and Tank Carradine sat out the first few practices with injury.

49ers defensive line coach Jim Tomsula is one of the most experienced in the game, and worked in NFL Europe before moving to the Bay Area.

His work with raw and inexperienced players in Europe gives Okoye the best chance of learning quickly, and the 49ers coach has been busy teaching the former-discus thrower the basics of the defensive position - including blocking techniques.

Okoye, who signed with the 49ers after going undrafted last month, will be hoping to make the team, with the practice squad a realistic possibility for the 21-year-old.

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