Rams' Sean McVay says Matthew Stafford has been placed in concussion protocol
Rams still evaluating Matthew Stafford; QB not in concussion protocol - ESPN
Rams QB Matthew Stafford placed in concussion protocol - ESPN
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Matthew Stafford enters concussion protocol before week 10 matchup with Arizona Cardinals - Revenge of the Birds
Lions QB Matthew Stafford glad NFL altered protocols following false-positive COVID-19 result
Rams QB Matthew Stafford progressing in concussion protocol - ESPN
Matthew Stafford in concussion protocol: Rams QB remains absent from practice
NFL notebook: Stafford says Lions right to sit him on Sunday