Last week, the rapper and singer Rod Wave edged Olivia Rodrigo from the No. 1 spot on Billboard’s album chart by just a few thousand sales. This week he has done it again, but the margin was narrowed to a few hundred.

Rod Wave’s “Nostalgia” logs its second week at No. 1 with the equivalent of 88,000 sales in the United States, while Rodrigo’s “Guts” comes in second place with 87,500, according to the tracking service Luminate, which supplies the data behind Billboard’s charts. (Luminate’s publicly disclosed data is rounded.)

Of the total “equivalent” sales number for “Nostalgia” — a composite figure that reconciles an album’s popularity on streaming services with old-fashioned purchases of physical albums and downloads — nearly all were for streaming. Rod Wave’s album accounted for about 125 million streams and just 500 or so purchases as a complete unit.

Doja Cat’s “Scarlet” opens at No. 4, with the equivalent of nearly 72,000 sales, including 88 million streams. On the Hot 100 singles chart, her song “Paint the Town Red” — featuring a prominent sample of Dionne Warwick’s 1964 hit “Walk on By” — returns to No. 1, logging its second time at the top.

On the album chart, Morgan Wallen’s “One Thing at a Time” is No. 3. The singer-songwriter Zach Bryan has two titles in the Top 10: His latest LP, “Zach Bryan,” falls two spots to No. 5 in its fifth week out, while a new five-song EP, “Boys of Faith,” with appearances by Bon Iver and Noah Kahan, arrives at No. 8.