The production of Southsyde took over three years to complete due to no budget. The script was written in February 2012, it began filming in November 2013, and didn't wrap until November 2015.
Production was shut down for three months when Anthony Michael Marks suffered a brain bleed while shooting the final fight scene. He spent three days in ICU.
The story was inspired by a chain of events that occured in Anthony Michael Marks' life.
Production started in 2013, before Southpaw or Creed