Mustard's “Pure Water” f/Migos (QC/10S/Interscope) grabs the top spot this week. DJ Khaled's “Just Us”f/ SZA (We The Best/Epic) will be up another 850 spins and climb inside the Top 20. YK Osiris' “Worth It” (Def Jam) and YG's “Go Loko” f/ Tyga (Def Jam) will both have solid gains. DaBaby's “Suge” (SCMG/Interscope) will be up 400+ spins, cracking the Top 25. And DJ Khaled's “You Stay” f/ Meek Mill will debut, along with Jonas Brothers' “Sucker” (Republic).