Here in OKC, only KOCO and KOKH have a two-anchor format for their weekend newscasts.
KOCO had long employed just one anchor for the weekend evening newscasts, until about January, when they appointed Erielle Reshef and Morgan Chesky as Friday and Saturday evening anchors; Jessica Schambach was solo on the Sunday evening newscasts, but they put her Monday-Thursday co-anchor Paul Folger on Sundays as well around the same time that Reshef and Chesky joined the weekend shows. Dan Thomas and Katy Blakey anchor the weekend morning news, which also used to be one anchor until a couple of years ago.
KOKH has pretty much always had a dual-anchor format on weekends, since they expanded its 9 p.m. news to seven nights a week in 1998. Right now, Kisha Henry and Mark Taylor anchor that program (the only weekend newscast on that station, really, if you don't count their "Sports Sunday" show at 10 p.m.), but sometimes one of the two ends up subbing in on the morning or 9 p.m. news on weekdays (KOKH, much in a similar way as KOCO, does not keep personalities for very long).