It is going to be a pretty close race for #1 once the chart re-adjusts today following the implemtaion of the panel changes, and the battle is between RCA's Mark Ronson "Uptown Funk" and Motown/Capitol's Ne-Yo "She Knows." RCA's Pitbull (f. Ne-Yo) is at #3 and having another great week. YMCMB/Republic's Nicki Minaj "Truffle Butter" f/ Drake and Lil Wayne will be up over 700 spins, and RCA's Chris Brown and Tyga "Ayo" will be over 500 spins. Roc Nation's Rihanna/Kanye/Paul McCartney "FourFiveSeconds" will also be over 500 spins. Big Machine/Republic's Taylor Swift "Style" will take a huge chart leap, as does Columbia's Calvin Harris f/ Big Sean "Open Wide". Look for Def Jam's Big Sean "Blessings" and Republic's Ariana Grande "One Last Time" to debut this week.

It is going to be a pretty close race for #1 once the chart re-adjusts today following the implemtaion of the panel changes, and the battle is between RCA's Mark Ronson "Uptown Funk" and Motown/Capitol's Ne-Yo "She Knows." RCA's Pitbull (f. Ne-Yo) is at #3 and having another great week. YMCMB/Republic's Nicki Minaj "Truffle Butter" f/ Drake and Lil Wayne will be up over 700 spins, and RCA's Chris Brown and Tyga "Ayo" will be over 500 spins. Roc Nation's Rihanna/Kanye/Paul McCartney "FourFiveSeconds" will also be over 500 spins. Big Machine/Republic's Taylor Swift "Style" will take a huge chart leap, as does Columbia's Calvin Harris f/ Big Sean "Open Wide". Look for Def Jam's Big Sean "Blessings" and Republic's Ariana Grande "One Last Time" to debut this week.