Read the sentence. Michael Jordan, the basketball player , won six championships for the Chicago Bulls. The commas are used correctly in the sentence because the underlined element is

“The basketball player” gives extra information about Michael Jordan, but it is not needed to identify which person the sentence means. That makes it a nonrestrictive phrase, so commas correctly set it off from the rest of the sentence. It is not a clause because it has no subject-and-verb combination.

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