Def Jam is playing a game of musical chairs at the top of the T40 chart, with Justin Bieber moving into the #1 spot with "Love Yourself" one week after Alessia Cara's "Here" claimed her first #1. XO/Republic's The Weeknd moves up another notch to #4 with "In The Night." The Chainsmokers "Roses" f/Rozes (Disruptor/Columbia) and Daya's "Hideaway" (Artbeatz/RED) both move up inside the Top 10. It looks like this is the week that Shawn Mendes & Camila Cabello's "I Know What You Did Last Summer" (Island/Republic) will join the Top 10. Taylor Swift's "Out of The Woods" (Big Machine/Republic) goes Top 15 while G-Eazy's "Me Myself & I" f/Bebe Rexha (RCA) makes the Top 25. Rihanna's "Work" f/Drake (Westbury Road/Roc Nation) will come screaming up the chart this week, but others looking to make that jump as well are ZAYN's "Pillowtalk" (RCA) and Lukas Graham's "7 Years" (Warner Bros.).