"He knows how to line up - looks good lining up," Schwartz said Friday. "We don't have any pads on. You don't want to get too head-over-heels on linemen and running backs, and people like that, that make their living in the trenches out here, with non-contact practices."
Reiff was the only offensive lineman they drafted. He said he spent some time in Iowa training after being picked by the Lions, and he's now trying to settle in with his new teammates.
"It's a learning process, getting your feet wet, just going out, working on fundamentals and stuff," Reiff said. "It's a good start."
Reiff is listed at 6-foot-6, 313 pounds. He was a state wrestling champion in high school.
He is the only one of Detroit's eight draft picks who hasn't signed a contract, now that cornerback Dwight "Bill" Bentley - a third-rounder from Louisiana-Lafayette - reached a four-year deal Friday.
"It'll get taken care of," Reiff said. "The sooner the better."
Although he's without an agreement, Reiff is participating in the three-day minicamp anyway.
"I just learned some plays, some technique," he said. "There's quite a bit, but you're expected to know it."
Wide receiver Ryan Broyles, a second-round pick out of Oklahoma, was on the field but wore a baseball hat and didn't do much. He's coming off major knee surgery.
"He's not ready to do any of this stuff yet, but he is working very well," Schwartz said. "I think we have a very good situation for him, because we don't have to put him out there the very first rookie camp practice and expect him to be making plays."
"I think it's a fact of life in the NFL now that you need contributions from rookies. I remember a long time ago when I first started being a fan of the NFL, there was a common thought that every rookie you had on the field equaled one loss," Schwartz said. "I think those days are gone. I think college players are ready."
The Lions have high hopes for Reiff, even if he isn't doing all that much on the field at the outset. He's still impressed coaches with his work behind the scenes.
"Walkthroughs, meetings, things like that," Schwartz said. "You can tell that he's an experienced, smart, confident player, and he's going to do well for us."