Chris Buckle (@chris_buckle) tweeted at 10:04 PM on Mon, Mar 16, 2015:
Breaking from @OTLonESPN: 49ers LB Chris Borland retiring b/c of concerns about long-term effects of head trauma:*
http://t.co/fUnFQYUZN5
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https://twitter.com/chris_buckle/sta...193819648?s=09)