Who did the WBA title holder from 2009 to 2012 found the Super Boxing League with?
Super Boxing League:  Bill Dosanjh and Amir Khan founded Super Boxing League in 2017 after Super Fight League first season. Amir Khan (boxer):  He is a former unified light-welterweight world champion, having held the WBA (later Super) title from 2009 to 2012, and the IBF title in 2011.
Bill Dosanjh