The second-year cornerback has missed the last 11 practices since injuring his hamstring the third practice of training camp.
He only participated in the individual portion of practice on Tuesday -- which is common for players coming off injury -- but it must be nice to finally get some physical reps rather than those dreaded mental reps.
Over the last two seasons, Greenwood has gotten too many of the latter.
"He's missed quite a bit of time," head coach Jim Schwartz said. "It’s one thing being behind physically, but then also practices, technique, and things like that. He certainly has some ground to make up for sure."
The Lions selected Greenwood in the fifth round last year out of Albion College, but he did not play in 2012 due to an abdominal injury. He suffered that injury in OTAs last year, so he spent all of last training camp on the physically unable to perform list. He only had a three-week practice window during the regular season last year when the Lions were deciding whether to take him off PUP, which they never did.
Greenwood sensed how important it was to get back between the lines at practice.
"It's important," he said. "I'm just doing what I can, as much as they let me do, and what my body feels like. Just doing what I can."
Greenwood isn’t expected to play Thursday in Cleveland, but his return to the practice field is good news for a secondary that’s been beaten up early in camp.
Greenwood has some catching up to do if he’s going to be in the mix for playing time this year.
Bartell told reporters in training camp that Greenwood was the most physically gifted cornerback on the team, but that has to coincide with proper technique and being assignment sound in the scheme. Those things only comes from reps in practice and playing in the preseason.
"It's not frustrating," Greenwood said. "Just doing what I can, doing what my body allows me to do, doing what the trainers tell me to do."