Breaking a historic barrier and the highlight of NBC’s primetime Rio coverage, Simone Biles on Tuesday became the first American woman to win four gold medals in one Olympics in gymnastics. Biles’ fourth gold and her fifth medal overall this Summer Games, plus volleyball and track and field, comes a week after NBC scored its best Rio ratings results so far.

With a 6.8/24 rating in the adults 18-49 demographic and 23.82 million viewers in fast affiliate results Tuesday in primtime, last week feels like a long time ago. Last night was down 31% in the demo and 29% in its 8-11 PM audience in early numbers compared with the first Tuesday. Adding to NBC’s woes as the Rio Games move toward their conclusion this weekend, last night took a dive of 19% in viewers and 27% in 18-49 from the comparable night of the London Olympics on August 7, 2012.

Now, Tuesday’s primetime package could see an adjustment in the final numbers. The August 9, 2016 numbers went up a tenth in the demo to 10.0 and dipped a bit in total viewers to 33.4 million later that day. Last night’s early numbers declined a tenth from what Monday drew among 18-49s in fast affiliates, which went up a tenth in later ratings. That August 15 coverage drew 24.27 million viewers.

Even with its stumbling second Tuesday, NBC easily won the night among viewers and the key demo – as it has every day of the Rio Olympics. But like last week, it was not without competition: ABC’s Bachelor In Paradise (1.3/5) and Bachelor In Paradise: After Paradise (0.6/2) rose 18% and 20%, respectively, in adults 18-49. CBS’ only original offering was 9 PM’s Zoo (0.7/3), which was up a tenth. Fox and the CW were all encores Tuesday.