College football winners, losers in Week 4: Iowa emerges as Big Ten title threat

Key Points:

• Week 4 of college football conference play featured major upsets and pivotal performances, including No. 17 Iowa's last-second win at Michigan Stadium, their first there since 2010, boosting their Big Ten title hopes.
• Texas A&M suffered a devastating 35-6 loss to No. 10 LSU, with quarterback struggles highlighting the team's overall poor performance and casting doubt on their postseason prospects.
• Oklahoma State snapped an 18-game Big 12 losing streak with a 41-24 road victory over West Virginia, powered by quarterback Drew Mestemaker and wide receiver Wyatt Young's standout performances.
• Florida delivered a commanding 52-28 win over No. 4 Ole Miss, signaling their resurgence under Jon Sumrall and establishing themselves as a national contender with a strong rushing attack.
• High-profile players struggled in key moments, including Oklahoma quarterback John Mateer's costly errors in a 41-13 loss to Georgia, and Texas Tech's Will Hammond's inconsistent play following an ACL recovery, impacting their teams' competitiveness.