I have DIRECTV stream. I access using a FireTv 4K. Open the ESPN app on your Home Screen before launching your DIRECTv app. With the ESPN app opens, scroll down to LEAGUES. Then scroll right & select NCAA Football. Scroll down to EXPLORE MORE IN NCAA FOOTBALL. Scroll right & select Southeastern Conference. Scroll right on the top row until you see Mercer vs. Auburn. If you select it before the game, it will say this event has not yet started.
Hope this helps!
War Eagle!