Georgia leads trader consensus at 13.5% implied probability for the top-ranked defense amid a tight early-season race, followed closely by Indiana at 9% and Notre Dame at 8%. Notre Dame currently allows the fewest yards per game through early October, while Ohio State, Miami, LSU, and Georgia rank among the leaders in total and scoring defense metrics. Georgia’s edge stems from its established defensive identity under Kirby Smart, recent road win over Alabama that propelled the Bulldogs to No. 1 in polls, and proven track record. Indiana’s undefeated start and strong points-allowed numbers add pressure, as do efficient units from Texas, Oklahoma, and Iowa. With no team dominating across categories and schedules still evolving, the bunched probabilities reflect broad uncertainty among multiple Power conference contenders.