The Weeknd's "Starboy" (XO/Republic) took T40 radio by storm today, pulling in 163 adds on impact to easily land the Most Added position. Also going for first-week adds today was Sia's "The Greatest" f/Kendrick Lamar (RCA), which scored 54 stations on impact to land at #2. Team RCA also put 31 adds on Martin Garrix & Bebe Rexha's "In The Name of Love." Columbia pulled in an additional 42 adds on Calvin Harris' "My Way." Epic posted 39 adds on Fifth Harmony's "That's My Girl." Republic put 29 additional believers on Ariana Grande's rapidly-growing "Side To Side"f/Nicki Minaj, while G.O.O.D/Def Jam posted 26 on Kanye West's "Fade." Warner Bros. put 21 adds on Dua Lipa's "Blow Your Mind (Mwah)" on impact, and Capitol scored another 19 adds on Jon Bellion's "All Time Low." And finally, Hollywood impacted Jordan Fisher's "Lookin Like That" with 17 adds to round out the Top 10.