Many MMA fans may not remember, but one of the most popular MMA fighters in the world – Conor McGregor, fought for the Cage Warriors federation before becoming a big UFC star.
For Cage Warriors, the Irishman fought 5 times, of which he won 4, his last fight before moving to the UFC was at Cage Warriors 51 – December 31, 2012, against Ivan Buchinger, whom he knocked out in the 1st round after a phenomenal fight.
4 months later, McGregor fought for the UFC, for which he fought another 14 fights (10 wins and 4 losses) and became an international MMA star.
It is worth watching his last fight for the Cage Warriors federation to see how far the fighter has come since then.
source cage warriors @ YouTube