CFB Index · Conference power · 2025 season

The math doesn't care about your conference's reputation

Pick any two conferences. Win probability comes from actual team SP+ distributions — not TV schedules, not recruiting stars, not narrative. A random team from each conference on a neutral field. Who wins?

SP+ ratings via CFBD · 2025 season · 10,000 simulated draws per matchup

Conference A
SEC
vs
Conference B
Big Ten
SEC
—%
win probability
Big Ten
—%
win probability

Median SP+
—
conference midpoint
Ceiling
—
best team in conf
Floor
—
worst team in conf
Spread (σ)
—
internal variance
Top team
—
Median SP+
—
conference midpoint
Ceiling
—
best team in conf
Floor
—
worst team in conf
Spread (σ)
—
internal variance
Top team
—