Fighting further down the card, Liverpool's Derry Matthews produced a sizzling performance to dethrone Salford featherweight Steve Foster and claim the WBU title.
He got that chance having claimed the vacant WBU lightweight belt with a decision victory over Argentina's Angel Hugo Ramirez in Bethnal Green in October 2006.
Mathews' fight against Gicharu at the Liverpool Olympia on Saturday will be his first outing since losing his unbeaten record and WBU title to Choi Tseveenpurev in April.
The Swansea cruiserweight, 25, who holds the WBU title, will finally get a chance to enter the big league when he faces WBO king Nelson at the MEN Arena.
Perhaps if his bout with Aberdonian Lee McAllister in October 2007 for the vacant WBU lightweight title had resulted in a different outcome, Docherty would have been encouraged to make a greater effort.