How to install ESPN 3?
ESPN 3 is available in the official Kodi repository which is included by default in Kodi. You can install this addon by going in Kodi to System >> Settings >> Addons >> Get Addons >> XBMC.org Addons or Kodi.tv Addons
About SuperRepo and ESPN 3
SuperRepo does not maintain ESPN 3. We only provide an automated index for Kodi users to have easy access to ESPN 3 and other addons for Kodi. We are not affiliated with the developers (BlueCop,Romans I XVI,locomot1f,MetalChris) and do not provide help for this particular addon.