The 5 shortest UFC title reigns in history

#4 BJ Penn (Welterwight Championship, 107 days)

BJ Penn - Jumped ship to K-1

BJ Penn sprung a surprise back at UFC 46 when he defeated long-time UFC Welterweight Champion, Matt Hughes via submission to win the Championship.

Penn was overcome by emotion following the bout but in a shock to many, he decided to jump ship from the UFC to the K-1 organisation. As a result he had to vacate the Welterweight title after just 107 days.

Penn would return to the UFC many times over the years but would never recapture Welterweight gold. One wonders what might have been had he not joined K-1. The super-talented, Penn, would likely have reigned as Champion much longer.