Interscope's Benny Blanco, Halsey & Khalid's "Eastside" (FKS) is the new #1 at T40 this week. Republic's Ariana Grande has two songs vying for Greatest Gainer honors, as "7 Rings" looks to join the Top 5 and "Break Up With Your Girlfriend" lands inside the Top 20. Fletcher's "Undrunk" (Capitol) will also move into the Top 20. Cardi B & Bruno Mars' "Please Me" (Atlantic) not only charts, but vaults to the Top 25! The Chainsmokers' "Who Do You Love" f/5SOS (Columbia/Disruptor) heads to the Top 30, while Lil Peep & ILoveMakonnen's "I've Been Waiting" f/Fall Out Boy (Columbia) follows close behind. Also charting this week will be Zedd & Katy Perry's "365" (Capitol-Interscope) and NF's "If You Want Love" (NF Real Music/Caroline).