Question: In what city did Balls Mahoney begin his career in Assault Championship Wrestling?
Sentence (from "Balls Mahoney"): He is perhaps best known for his appearances with Extreme Championship Wrestling (ECW) during the late 1990s and early 2000s, where he was a three-time ECW Tag Team Champion, as well as working for World Wrestling Entertainment (WWE) on its "ECW" brand.
Relevant evidence: Yes