I'm an Aussie, and even I don't give a crap about cricket. Hell, I didn't even know "MCG" stood for Melbourne Cricket Ground until Rage Dump mentioned it! But then again, I don't give a crap about any sport...
Look, the point is that the writers only intended it as a pun on Madison Square Garden. I doubt they even KNOW about the MCG, let alone intended this semi-coincidence.
Also, Lionel Hutz Esq - I always thought that Matt's middle initial was J. I don't really have any justification for it, but so many of his characters also have J's for their middle names. (Homer J. Simpson, Phillip J. Fry, Bartholemew J. Simpson, Cubert J. Farnsworth, etc.) Still, who knows what his true middle name is - I just felt like bringing that up.