Pittsburgh is home to several micro-breweries so we were expecting a large selection when visiting the Pirates home stadium at PNC Park. The bars and stadium featured dozens of Iron City Light posters and signs so the former Pittsburgh Brewing Company icon, now brewed in Latrobe, seemed to be the beer of choice. And inside the stadium, both Iron City and IC Light were prominent - particularly with the Pirate branding. I'd rather drink this than an InBev product, yet was surprised to see so many Miller Lite drinkers. Even over Yuengling bombers.
While walking around the stadium I saw a familiar sign, Rivertowne Brewing was all over the Hall of Fame restaurant. Several of their beers are available at Seven Springs Mountain Resort - with the Babbling Blonde, Grateful White Belgian Wit, and Old Wylie's IPA
India Pale Ale being very drinkable beers. They also producing a very unique Hala Kahiki Pineapple Ale that I can handle a few sips - then just a little too sweet. And all of these beers are usually available in the Hall of Fame club. I also had my first Church Brew Works, the Pittsburgh brewery located in the historical former St. John the Baptist Church. This was their popular Pious Monk Dunkel; a very mellow dark beer - very drinkable - which should be an everyday beer for locals. 
The Church Brew Works Celestial Gold (a great lighter beer alternative) was also available at the only beer stand that was committed to craft beer. This Allegheny Beverage stand can be found between sections 116 and 117 and also includes several nationally distributed craft beers like Flying Dog Brewery, Lagunitas Brewing Company, Anchor Brewing Company, 21st Amendment, Breckenridge Brewery and more. The lines are long, but no wonder - that is literally your only choice for craft beer in the grandstand. Cheers.Update: In the comments, Dustin mentions that I failed to notice two major sources of craft beer at the stadium. Around section 130 look for Pops Plaza that hosts Pub 375, where you can find Victory Brewing Company, Rivertowne Brewing, Dogfish Head Craft Brewery, Bell's Brewery, and a few others. And on the opposite side of the park around section 103, there's Beers of the Burgh, with craft beers from Church Brew Works, East End Brewing Company, Penn Brewery, and others.
Update II (7/27/2015): After visiting the stadium again, found a great beer stand at the entrance to the left field bleachers. There's Church Brew Works, Bell's Brewery, Flying Dog Brewery and many more.
