There's a battle for #1 at T40 this week as Sia's "Cheap Thrills" (Monkey Puzzle/RCA) slowly gives way to Adele's "Send My Love (To Your New Lover)" (XL/Columbia), as she gets in position to take over the top slot. A new #1 currently looks attainable, but it will be close! Meanwhile Major Lazer's "Cold Water" f/Justin Bieber & MØ (Mad Decent/Def Jam) moves up to #3, Shawn Mendes' "Treat You Better" (Island/Republic) joins the Top 5, The Chainsmokers' "Closer" f/Halsey (Disruptor/Columbia) leaps to #6 and Drake's "Too Good" f/Rihanna (YMCMB/Republic) joins the Top 10. Warner Bros. moves Lukas Graham's "Mama Said" Top 20 this week. Alessia Cara's "Scars To Your Beautiful" (Def Jam) looks to join the Top 25. Tinie Tempah's "Girls Like" f/Zara Larsson (Parlophone/Warner Bros.) joins the Top 30. And there are several tracks joining the chart this week, including Meghan Trainor's "Better" f/Yo Gotti (Epic) and Jon Bellion's "All Time Low" (Capitol).