San Francisco 49ers center Marcus Martin (66) walks off the field during the second half of an NFL football game against the Cincinnati Bengals in Santa Clara, Calif., Sunday, Dec. 20, 2015.
San Francisco 49ers center Marcus Martin (66) walks off the field during the second half of an NFL football game against the Cincinnati Bengals in Santa Clara, Calif., Sunday, Dec. 20, 2015. Tony Avelar AP
San Francisco 49ers center Marcus Martin (66) walks off the field during the second half of an NFL football game against the Cincinnati Bengals in Santa Clara, Calif., Sunday, Dec. 20, 2015. Tony Avelar AP
49ers with Matt Barrows

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49ers cut ties with center Marcus Martin

March 08, 2017 10:09 AM