It's looking like RCA's Mark Ronson "Uptown Funk" will hold on to #1 for one more week. Pitbull moves to #2, and YM/CM/Republic's Nicki Minaj "Truffle Butter" climbs to #4 and will be up over 800 spins. Roc Nation's Rihanna/Kanye/Paul McCartney jumps into the top 10, and Big Sean "Blessings" (G.O.O.D./Def Jam) takes a huge leap as well. Look for Epic's Casey Veggies to debut this week.