Robbie Lawler

Robbie 'Ruthless' Lawler is a former UFC welterweight champion and one of the most respected knockout artists of the modern era. A teenage prospect in the early 2000s, he left and returned to the UFC in 2013 for a remarkable late-career resurgence, capturing the welterweight title in 2014 and defending it in a string of brutal, unforgettable wars.

His 2015 Fight-of-the-Year battle with Rory MacDonald and his title-defense classic against Carlos Condit are touchstones of welterweight violence. Quiet and humble outside the cage and ferocious inside it, Lawler retired at 30-16 (1 NC) — a beloved throwback warrior whose best nights are required viewing.