depends on what kind of contracts the local announcers have signed with their local affiliates. beyond that, there's this ridiculous thing that NATIONAL broadcasts need NATIONAL announcers. TBS would probably think they were slumming to use the Fox Sports Midwest crew for their broadcasts. But it's not limited to baseball; NFL broadcasts are just as bad Well there aren't local TV crews at all for the NFL, so thats not really an avenue that can be pursued. True, but they over value people like Joe Buck and under value people like Gus Johnson