Underdogs Is Now Open on 9th Street By Foobooz· 10/12/2012, 1:10 p.m. Grub Street’s Collin Keefe was at the new Underdogs location today where he snapped this shot and spotted a Geno’s employee ordering a dozen Underdogs hot dogs. Read More About: East Passyunk Hot-Dogs Italian Market Underdogs You Might Also Like The New Philly Restaurants Worth Watching This Summer Where to Find Philly’s Fanciest Hot Dogs The Absolute Best Oyster Bars in Philly