Once again this week there is a log jam in the Top 10 on the T40 chart, as Luis Fonsi & Daddy Yankee's "Despacito" f/Justin Bieber (UMLE/RBMG/Def Jam/Republic) stays in the top slot plus maintains being the Greatest Gainer of the week. Shawn Mendes' "There's Nothing Holdin' Me Back" (Island/Republic) currently remains at #5, even though he is up over 1500 spins. Kesha's "Praying" (RCA) not only charts, but will wind up in the Top 30. Also charting this week will be Demi Lovato's "Sorry Not Sorry" (Island/Republic).