Halsey claims her fourth Pop Songs No. 1, after The Chainsmokers' "Closer," on which she's featured (11 weeks, 2016); "Him & I," with G-Eazy (two weeks, 2018); and her own "Without Me," which "Eastside" displaces after four weeks at the summit.
Halsey is the first artist to succeed herself directly atop Pop Songs with a new No. 1 since Iggy Azalea in July 2014, when Ariana Grande's "Problem," featuring Azalea, took over for Azalea's "Fancy," featuring Charli XCX.
Halsey is the fourth artist to swap out No. 1s on Pop Songs and the third as a lead on both songs; OutKast's "The Way You Move," featuring Sleepy Brown, ended the reign of the pair's "Hey Ya!" in 2004, while Mariah Carey's "One Sweet Day," with Boyz II Men, replaced her own "Fantasy" at No. 1 in 1995.
Honorable mention to Maroon 5 frontman Adam Levine: "Stereo Hearts," by Gym Class Heroes featuring Levine, supplanted Maroon 5's "Moves Like Jagger," featuring Christina Aguilera, in 2011. (Both songs were co-written and co-produced by Blanco.)
Meanwhile, Khalid collects his second Pop Songs leader, after "Love Lies," with Normani, ruled for two weeks in September and subsequently tied Dua Lipa's "New Rules" for the longest run on the chart (45 weeks) in the list's history. He concurrently earns his fourth Pop Songs top 10, as "Better" bumps 11-9.
All charts will update tomorrow (Feb. 26) on Billboard.com.