Efficiency margin: points per possession (PPP) minus opponent PPP (more about these stats) Conference games only 1. Ohio State (+0.14) 2. Illinois (+0.10) 3. Iowa (+0.06) 4. Wisconsin (+0.05) 5. Michigan State (+0.03) 6. Michigan (-0.01) 7. Indiana (-0.03) 8. Minnesota (-0.06) 9. Northwestern (-0.07) 10. Penn State (-0.11) 11. Purdue (-0.12)