Efficiency margin: points per possession (PPP) minus opponent PPP (more about these stats) Conference games only, thru February 26 1. Ohio State (+0.14) 2. Illinois (+0.10) 3. Wisconsin (+0.09) 4. Michigan State (+0.04) 5. Iowa (+0.02) 6. Michigan (0.00) 7. Indiana (-0.04) 8. Minnesota (-0.05) 9. Northwestern (-0.08) 10. Penn State (-0.09) 11. Purdue (-0.11)