Corrales vs. Castillo I (2005)

Diego Corrales's tenth-round comeback against José Luis Castillo is universally regarded as the greatest single round in boxing history, with Corrales rising from two knockdowns to stop Castillo with a furious flurry. Corrales landed 43 unanswered punches in the final sequence, a feat that outperforms #5 Gatti vs. Ward I in dramatic reversal percentage. This round produced 15% more combined power shots than any other single frame in Top 10 history, according to CompuBox data, and remains the only round where a fighter overcame two knockdowns to score a stoppage.