“Good Morning America” inched back into the lead in the breakfast battle for Aug. 16-20, while status quo reigned elsewhere throughout Nielsen daytime and fringe dayparts.The ABC morning show ended “Today’s” two-week win streak with a 3.9 rating, 20 share to the NBC show’s 3.8/18, although the Peacock show ranked first, 1.6 to 1.5, among adults 18-49. “CBS This Morning” improved to a 2.7/13 in households and a 0.9 with young adults. The ABC and NBC shows are at the same average as last week through eight weeks of the third quarter, and “GMA” has still been first 38 of the last 41 weeks. CBS’ long run CBS also ran its daytime streak to 233 weeks, not quite 4 1/2 years, with a 5 .7/20 to ABC’s still-solid 5.2/18 and NBC’s 3.4/12. ABC continues to run ahead of its third-quarter ’92 results for all programs and ranked first among women 18-49, with a 3.9 rating to CBS’ 3.3 and a 2 rating for NBC. “Nightline” finished on top in latenight with a 4.9/14 against a repeat week of “The Tonight Show With Jay Leno,” which posted a 4.6/13 in its first half-hour for four days, excluding the night the web aired preseason football. “Tonight’s” full-hour average was 3.9/12, while CBS’ “Crime Time” shows averaged a 2.8/10. Fox kidvid in front With CBS again facing low West Coast coverage due to sports, Fox Children’s Network edged ABC in Saturday morning with a 4.7 rating among kids 2-11 and 2.7/ 11 in households. ABC trailed closely with a 4.6 and 2.6/12, respectively, from 8 a.m. to noon, while CBS posted a 4.0 and 2.4/11. Fox’s “X-Men” was first both among households and the children’s demo. With two weeks remaining in the 52-week broadcast year, FCN and CBS are now tied among children, averaging a 5.2 rating each, followed by ABC (4.7). The webs will launch their new kidvid lineups early next month. CBS’ preseason football brought down the best weekend sports rating, a 6.6/23 on Saturday. NBC averaged only a 1.8/5 with its tennis coverage.