Def Jam-Republic had quite a week with Big Sean & Metro Boomin's "Pull Up N Wreck," which gets 48 adds out of the box. Eminem's "Walk On Water" f/ Beyoncé (Shady/Aftermath/Interscope) comes in second with 32 on impact week. N.E.R.D & Rihanna's "Lemon" (Columbia) squeezes out another 15 new stations. And QC/Motown/Capitol's Stefflon Don sees 12 stations come in on "Hurtin' Me" f/ French Montana.