One of them, to rookie tight end Colt Lyerla, was potentially serious.
On the other, to veteran nose tackle B.J. Raji, the Packers appear to have gotten lucky.
Packers coach Mike McCarthy decided not to scrimmage on Family Night, but rather just hold a regular training camp practice. There is no live tackling in McCarthy's practices.
Lyerla wouldn't specify his exact injury, but he had crutches in his locker. He would only call it a leg injury and when he was not using the crutches, he walked slowly and with a limp. The injury occurred on one of Lyerla's biggest -- and perhaps most unwise -- plays of training camp.
Perhaps he felt he the need to do so after a slow start in his return to football after leaving the University of Oregon midway through last season.
"The first couple days were a little bit of a slow start but after Week 1, I feel like I've made a lot of leaps and bounds," said Lyerla, who was signed after a tryout in May.
Many in the crowd of 67,336 -- a Family Night record -- were probably holding their breath when Raji appeared to injury his right ankle. He did not return to the practice but afterward said he was only scheduled to play one more snap.
"I'm fine; I just got rolled up on in one of the passing drills," Raji said. "But after the initial shock of it, I was able to walk it off, and I felt like I'll be OK."
Raji said he expected to be able to practice when training camp resumes Monday.