Only groups for trivia night. Unless you're okay with meeting random people at the bar, then by all means stay. Just make sure you're watching the game primarily then pipe in when you know the answer and people next to you have absolutely no idea what the answer is. Who knows, maybe you'll get lucky and know the final bonus round question worth a lot more...
Also go on live music night...it's free, the music isn't the greatest, but when it's free it's at the very least a good laugh when you've got friends to chill with, watch the game - Pirates for me is always the go to. Oh and did I mention that draft Yuengling is only $2! Doesn't get much better than that on the Northside ladies and gents!
Hope you enjoy the hole in the wall as much as I did!