I have seen many articles that use quotes from players like:
We gonna [sic] be working hard over the summer cause we gotta [sic] get better.
What is sic? Where does it come from?
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sic is Latin (so, thus) and is used to call attention to an error in an original quote. Specifically, it is used when quoting another to say, "this is not a typographical, spelling or grammar error on the part of the reporter; rather, the error was in the original, and we're quoting it without change."
It's from the Latin sic (so, thus). Etymonline dates it back to 1887.