Daniels is eligible for the practice squad.
Cunningham is a former second-round draft pick who has recorded 67 career tackles, 3 1/2 sacks, two forced fumbles and two fumble recoveries.
Marecic is a former Stanford standout who played for coach Jim Harbaugh in college.
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Aaron Wilson covers the Ravens for The Baltimore Sun.
This story originally appeared on Nationalfootballpost.com
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