2, 4 and 11 all have had at least one top-rated newscast in the latest "sweeps" period:
http://www.tvnewscheck.com/article/65407/pittsburgh-tv-news-is-a-tight-3way-race
http://www.tvnewscheck.com/article/65407/pittsburgh-tv-news-is-a-tight-3way-race