Hi @CHEETAHOBX007,
Thanks for posting here in the Roku Community!
We're glad to assist you with your problem having a dark screen when watching Live sports on Roku. What is the brand of your TV? Please try to adjust the brightness settings and picture modes of your TV as the settings of TV also reflects even on Roku setup.
Please keep us posted on what you find out!
All the best,
Eunice
Eunice L.
Roku Community Moderator