The progress of rookie guard Jamil Douglas (75), shown with right tackle Ja'Wuan James, could determine whether the Dolphins sign free agent Evan Mathis.
The progress of rookie guard Jamil Douglas (75), shown with right tackle Ja'Wuan James, could determine whether the Dolphins sign free agent Evan Mathis. AL DIAZ MIAMI HERALD STAFF
The progress of rookie guard Jamil Douglas (75), shown with right tackle Ja'Wuan James, could determine whether the Dolphins sign free agent Evan Mathis. AL DIAZ MIAMI HERALD STAFF

Miami Dolphins’ first full-contact practice of training camp will spotlight battle at left guard

July 31, 2015 1:08 PM

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