The Detroit Lions waived tight end Shane Zylstra with an injured designation Tuesday, one day after he suffered a potentially season-ending knee injury in practice.
Zylstra was hurt at Lions training camp Monday when he took a hit to the knee by cornerback Khalil Dorsey after catching a short pass in flat.
The Lions cut short practice after the hit, which was a legal football play but the kind rarely seen in training camp. Zylstra limped off the field under his own power after being helped to his feet by Lions trainers, as veteran safety C.