Post Malone's "Wow" (Republic) is on pace to take the top spot at T40, but Jonas Brothers' "Sucker" (Republic) is slow to relinquish its reign, so the battle could go either way! Meanwhile, Lil Nas X's "Old Town Road" (Columbia) continues to climb up inside the Top 5, and Khalid's "Talk" (RCA) joins the Top 5. Ed Sheeran & Justin Bieber's "I Don't Care" (Def Jam-Atlantic) and Shawn Mendes' "If I Can't Have You" (Island/Republic) both move up inside the Top 10. Look for Billie Eilish's "bad guy" (Darkroom/Interscope) to break the Top 10, and Ed Sheeran's "Cross Me" f/ChanceTheRapper/PnB Rock (Atlantic) to land inside the Top 15. Katy Perry's "Never Really Over" (Capitol) not only charts, but moves Top 20. Also debuting on the chart this week will be The Chainsmokers' "Call You Mine" f/Bebe Rexha (Disruptor/Columbia), Shaed's "Trampoline" (Photo Finish/Caroline), Mark Ronson's "Find U Again" f/Camila Cabello (RCA) and Lewis Capaldi's "Someone You Loved" (Vertigo/Capitol).