Detroit Lions linebacker Jimmy Rolder (41) practices during training camp at Meijer Performance Center in Allen Park on Thursday, July 30, 2026. | USA TODAY Network via Reuters CoThe Detroit Lions 2026 NFL Draft class has already been hit with two significant injuries. Back in the spring, fifth-round pick Kendrick Law suffered a season-ending ACL injury. And on Friday, fourth-round pick Jimmy Rolder left a training camp practice early with a leg injury. According to a report from Justin Rogers, Rolder is expected to be out for a while. As a response, the Lions opted to sign veteran Devin White to help Detroits linebacker room.Its a tough break for Rolder, as he had a promising starting to training camp. While he wasnt likely to be a prominent feature on Detroits defense in his rookie season, the former Michigan linebacker was in line for a significant role on special teams. Back in the spring, Lions coaches were optimistic about how Rolder was progressing in the early stages of his NFL career. Still has a lot of room for growth, but Im pretty good with where he is now, Lions linebacker coach Shaun Dion Hamilton said in June. I just continue to challenge him day in and day out, where its always a learning curve for rookies coming from college football to the pros, but Im excited to work with him and its gonna be a lot of meat on the bone and a lot of things that he can grow (from) coming into training camp.Unfortunately, it appears Rolders development will have to be on hold. At this point, its unclear just how long a while is, but Detroit cannot place him on the Physically Unable to Perform (PUP) list now that training camp has started. If the Lions opt to place him on injured reserve now, his rookie season will be over. But Detroit could opt to carry him to roster cutdowns, then place him on IR, and he would only have to miss a four-game minimum. Well likely get more clarity on Rolders issue the next time Dan Campbell is scheduled to talk to the media, which is Monday morning.