And then there were two.

Clemson and Iowa. That’s it. Those are the only two remaining unbeatens left in college football following losses from Houston, Ohio State and Oklahoma State.

As a result, the Hawkeyes were slotted among the nation’s best in the latest Associated Press poll. Iowa climbed to No. 3 and moved ahead of Ohio State and Oklahoma State.

Iowa earned that spot by improving its best start in school history with a 40-20 win against Purdue on Saturday. Three other ranked B1G teams picked up victories, as well.

With Michigan State’s upset of OSU, the Spartans rose to No. 6. Michigan also continued its rise following a win in Happy Valley and moved up to No. 12 while Northwestern rounded out the B1G teams in the top 25 at No. 17.

Northwestern’s defeat of Wisconsin knocked the Badgers out of the top 25, which means the Hawkeyes now only have one win against the current top 25.

The College Football Playoff poll will be released on Tuesday at 6 p.m. CT.