The San Francisco 49ers opened the practice windows for center Daniel Kilgore and wide receiver DeAndre Smelter earlier this week. Both had been taking part in meetings, but had been unable to get involved in physical practices. Kilgore seemingly stands a decent chance of returning to the 53-man roster in the next couple weeks, while Smelter seems more likely to spend the season as a "medical redshirt" before joining the roster next season.
Smelter met with the media earlier this week to discuss his first week of practice. He said his knee feels fine, but it's more about getting his whole body in football shape again.