Both Iowa and Maryland are 4-0. But there are reasons why Iowa is ranked fifth in the country in the latest AP Top 25 poll, while Maryland is outside of the top 25.

The Hawkeyes are far superior defensively. The Hawkeyes are surrendering just 11 points a game, third-best in the nation. Maryland has played a weak schedule. The Terrapins haven't faced a defense anywhere near the caliber of Iowa. 

Maryland is 3-8 ATS in its last 11 Big Ten games. Iowa has thrived in this role, a proven commodity with a 20-6 ATS mark the past 26 times as a road favorite. The Hawkeyes' last four road victories against Power 5 conference opponents all were by double-digits. 

Taulia Tagovailoa leads the Big Ten in passing yards and completion percentage. But he's not as good as his brother, Tua. The Hawkeyes lead the Big Ten with six interceptions. I would take their defense over Tagovailoa. 

Iowa is the better coached team and owns huge edges on both lines of scrimmage.