It's no surprise that Tom Green, the best writer among area sportscasters, has announced that he's leaving Channel 7 in a matter of months; when a program is ratings-challenged, as this one is, the team that puts it together tends to fragment. And that's unfortunate in this case, since the structure of KMGH's ten o'clock newscast is sound, its reports are ambitious, anchors Ann Trujillo and Mitch Jelniker are the best in town at getting out of the way of a story, and Green and weathercaster Marty Coniglio are very good at what they do. Catch them while you can.