Ricky Hatton V Marco Antonio Barerra

They were at one point, while both still active competitors, part of the GBP team of co-managing partners with stakes in the company while all being promoted by it. DLH was of course the honcho, then B-Hop as his right hand, then SSM and MAB and Winky below them, and then Hatton and JMM. The rest of them besides the main two pretty much all either fell out with or left the company eventually, but there are probably still bonds of friendship between the alumni.