SB Nation’s Week 4 Big Ten power rankings keep undefeated Indiana at No. 1, while Iowa jumps from sixth to second after edging Michigan. Wisconsin rises from 14th to seventh after beating Penn State, and Oregon moves from eighth to fourth after defeating USC.
Wisconsin came back from a 17-0 deficit to win 24-20 at Penn State, while Iowa edged Michigan 20-19 on a walk-off touchdown pass. The rankings put Ohio State third, UCLA fifth and Nebraska sixth; Michigan falls to eighth, USC to ninth, and Minnesota is 10th.
Below the top 10, the rankings place Northwestern 11th, Washington 12th, Penn State 13th, Illinois 14th, Michigan State 15th, Maryland 16th, Purdue 17th and Rutgers 18th.
