Learning curves in the NFL often can be flattened by players who are bigger stronger and faster than their opponents.

While Lions rookie defensive end Ezekiel Ansah still has to adjust coach Jim Schwartz doesn’t expect his learning curve to be too steep.

“Those great athletes they adapt pretty quickly and we expect him to” Schwartz said.

The Lions drafted Ansah fifth overall hoping he could use his 6-foot-5 271-pound frame and 4.63-second 40 speed to become a force off the edge.

Despite Ansah’s impressive measurables drafting him raised some red flags because his three years at BYU were the extent of his playing career so there likely will be some bumps in the road as he continues to learn.

During the first day of training camp Friday Ansah hit one of those bumps and had to leave the field twice toward the end of the two-hour practice for what appeared to be a left ankle issue. Ansah said it wasn’t too serious but the coaches held him out after he walked off the second time.

“He got stepped on out there on one just normal first-day stuff” Schwartz said. “He doesn’t have anything that’s significant.”

Ansah also quickly experienced the level of competition he’ll see this season when during an 11-on-11 play left tackle Riley Reiff easily pushed him back to clear a gaping hole for running back Reggie Bush.

“There’s a lot of things that he’s working on” Schwartz said. “He’s very skilled he’s very talented but I think that a lot of times through OTAs and minicamp (rookies) feel like ‘OK I got this.’

“And then the first day of training camp comes and it’s like ‘Wow that’s a big adjustment.’ ”

Ansah spent the early part of Friday as the second-team right end (Willie Young was on the first team) but had some reps with the first team later.