Logic's "1-800-273-8255" f/Alessia Cara & Khalid (Def Jam) is mounting the charge to take over the #1 spot on the chart, but it will be a close call. Camilla Cabello's "Havana" f/Young Thug (Syco/Epic) takes a big leap and lands securely inside the Top 10. Taylor Swift's "Ready For It" (Big Machine/Republic) is officially Top 15. Niall Horan's "Too Much To Ask" (Capitol) joins the Top 30. And looking to chart is Bebe Rexha's "Meant To Be" f/FGL (Warner Bros.).