Because polls suck. Sagarin's ratings have them at 17 (seventeen) overall. His rating system is supposedly complex, and factors in many things that RPI doesn't. He has them ranked above the teams below that are all ranked in the AP top 25. His ratings have proven to be much more accurate than the AP polls, in football and basketball. http://en.wikipedia.org/wiki/Jeff_Sagarin#Methodology
Butler
NC State
San Diego State
Kansas State
Missouri
New Mexico
Notre Dame
Oregon
Illinois
UCLA
Marquette