You are jarring my memory. Did WB have two places?...one in Seven Corners and one in Arlington. The Arlington room was the main action spot. I could be all wrong on this.
I may not be as old as some of the other posters on this thread, which is hard to believe, but I am relaying my memories as a tween. :grin:
The one in Seven Corners I went to was in a strip mall, and you had to go down a staircase to get into the joint after you walked in the front door. It was dark in there, only one way in and one way out.
And yes, it was in Seven Corners. Arlington Proper is a huge stretch on the map. What may look like Falls Church on a map may be Arlington in Virginia. My birth mother for years lived across from Ft. Myer in Arlington, and then they moved to Falls Church in Pimmit HIlls. I used to spend a lot of time in Virginia, so this is my childhood memory of Jack and Jill's in Seven Corners area and Weenie Beenie's hot dog stands.
I also am familiar, as I'm sure Black-Balled is, with the first so-called Champion's pool room off Glebe Road, in a strip mall with a cop shop. It's funny the things you remember. Nobody liked hanging out in the parking lot of this pool room because of that cop shop where they sold cop-related items. Seattle Sam worked this place graveyard shift. Bill Staton came there to play Freddie Boggs in the '80s era, after Jack and JIll's was long gone. The pool grapevine worked overtime, because by teh time the match began, the place was packed with spectators, hoping to see a good show. After the first game, Staton got pissed off at Freddie Boggs for taking too long between shots. He lost one match for a nickel and unscrewed, leaving us there with nothing to do.
Geese, my friend, got in an action against Bobby Hawk. Geese had to play one-handed to Bobby's two, with Geese getting a spot. Geese was robbing. We drove home with a smile on our faces at sunrise that day.

In Metro DC area today, there aren't very many pool rooms. The ones that do exist seem to be in Virginia.