Episode649. Should Ohio State (and Michigan, and Clemson) Join the N.F.L.?Freakonomics Radio · Oct 10, 2025 · 55 minPlay · 55:21SaveShareEpisode pageSoccer leagues around the world use a promotion-and-relegation system to reward the best teams and punish the worst. We ask whether American sports fans would enjoy a similar system. (Part two of a two-part series.)RelatedCan World Cup mania grow MLS in the U.S.?Planet Money • Jul 17, 2026 • 26 min