CBS is shuffling the anchor desk of its low-rated morning show. Early Show anchors Harry Smith and Maggie Rodriguez are being replaced by Chris Wragge and Erica Hill, who host the Saturday edition. Marysol Castro of ABC’s Good Morning America will replace Dave Price as the weather forecaster, and Jeff Glor will be the show’s new newsreader. The new team will debut January 3. The Early Show ranks third among the network morning shows with 2.9 million viewers last week to Good Morning America’s 4.6 million and Today’s 5.6 million.