On 17 February 2007, a bout for the newly created and vacant WBO interim lightweight title was made between Earl and Michael Katsidis.

However, soon after getting back to his feet following the third knockdown and having the towel being thrown in seconds later (only for it to be thrown back out again by referee Mickey Vann), Earl managed to floor Katsidis momentarily with a heavy right hand at close quarters, rendering the latter visibly stunned and unsteady on his feet.

[2] Earl suffered his third loss and second in a row on 8 December 2007, when he was stopped in the first round by Amir Khan.

[5] Earl's final professional fight was a ten-round stoppage loss to Steve Martin on 22 August 2014.

[6] The youngest of three brothers, Earl grew up in the Limbury council estate of Luton and attended Icknield High School.