March Madness is a rollercoaster of emotions. For every Cinderella story, there's a powerhouse left heartbroken. Some tournament losses are tough but understandable—a hard-fought battle against a great team. Others? They sting for years, becoming part of college basketball lore.

We're diving into the agony of defeat, ranking every tournament loss on a "Pain Index." Think of the gut-wrenching upsets, the last-second daggers, and the dreams dashed in spectacular fashion. It's the kind of pain every fan knows, whether you're rocking your team's jersey from the couch or in the stands.

From early-round stunners that bust brackets to Final Four collapses that define legacies, we're assessing the visceral hurt. And yes, certain blue-blood programs have endured losses so brutal they've become legendary cautionary tales. It's all part of the beautiful, brutal drama that makes the NCAA tournament unforgettable.