Safety Glover Quin continues to work his way through the NFL’s return-to-play concussion protocol and did not take part in Wednesday’s first practice day of the week for the Lions.
Quin has to clear five stages of the protocol by Sunday to keep his iron-man streak of 98 consecutive starts intact. Stage 1 is no activity until symptoms desist. Stage 2 is light aerobic exercise. Stage 3 is 100 percent of a cardio workout. Stage 4 is a light practice with no contact. Stage 5 is contact practice.
After Stage 5, it is up to an independent neurologist to finally clear him to return to game action.