What if. Those two little words cut to the heart of what we love about sports. They keep us riveted even after a losing season (or nine of 'em in a row, bless you, Browns fans). They're about hope and vindication; they allow us to dream up dynasties and wipe away mistakes. What if... SI explores the most compelling (realistic) conjectures and the coulda-woulda-shoulda-been turning points with the most expansive ripple effects. Brace yourself. You have just crossed over into the imaginary zone

Edited by Adam Duerson and Jacob Feldman