The battle is on for #1 this week! Drake's "One Dance" (YMCMB/Republic) currently sits at the top of the chart, but Sia's "Cheap Thrills" (RCA) is now Top 3 and on pace to be this week's Greatest Gainer, climbing quickly enough to make #1 too close to call. Meanwhile, Kent Jones' "Don't Mind" (WeTheBest/Epic) joins the Top 10, while Adele's "Send My Love (To Your New Lover)" (XL/Columbia) moves Top 15. Ariana Grande's "Into You" (Republic) is poised to join the Top 20. And hitting the Top 30 this week will be Drake f/Rihanna's "Too Good" (YMCMB/Republic) along with Lukas Graham's "Mama Said" (Warner Bros.).