We know a little more about the dust-up between Antonio Brown and Oakland Raiders general manager Mike Mayock and, not surprisingly, the details aren’t pretty. Brown saw Mayock, who sent Brown a letter informing him he’d be fined for missing a workout before the Raiders’ preseason game in Canada, watching practice on Wednesday. So during practice he initiated an argument with Mayock, according to ESPN’s Josina Anderson. During that argument, he called Mayock a “cracker,” Anderson reported. A day later the Raiders leaked a report that they were considering suspending Brown, who wasn’t at practice Thursday. The Raiders listed him...