A PREVIEW OF RADIO CHART PREVIEWS

At T40, Luis Fonsi & Daddy Yankee's "Despacito" f/Justin Bieber (UMLE/RBMG/Def Jam/Republic) will stay in the #1 slot for a second week, while the new Greatest Gainer looks to be Shawn Mendes' "There's Nothing Holdin' Me Back" (Island/Republic), which jumps inside the Top 5.

Meanwhile at Rhythm there is a new #1 song as French Montana's "Unforgettable" (Eardruma/Bad Boy/Interscope) moves into the top spot, while DJ Khaled's "Wild Thoughts" f/ Rihanna & Bryson Tiller (We The Best) goes Top 5 and Logic's "1-800-273-8255" f/Alessia Cara & Khalid (Def Jam) gets poised to go Top 10, powered by a 200+ spin gain.

And at Modern Rock there is some serious chart log-jam, as Portugal. The Man sit at #1 for a fourth week in a row with "Feel It Still" (Atlantic) while the rest of the Top 10 remains locked in position. Fall Out Boy's "Champion" (Island/Republic) quickly arrives in the Top 25 at #24, up 100 spins.

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