A deed of gift challenge (the deed is the formal document governing Cup challenges) is a one-on-one contest; no other challengers, just a head-to-head, winner-takes-all contest.
Oracle took on Alinghi in Valencia in 2010, their giant 90ft trimaran, with a wingsail so big it could not sail under the Golden Gate Bridge, trumping Alinghi's giant catamaran.
Back in 1988, the lawyers were out in herds as well. Fay interpreted the long period of inactivity by the San Diego Yacht Club following Conner's win in Fremantle (taking the Cup back off the Australians) as unwillingness to race.
So, using legal leverage based around the deed of gift, he won court approval to stage a one-on-one challenge.
He came up with, as challenging yacht, a 90ft monohull, dwarfing the 12m class that had been used in each Cup since 1958.
The Americans fought this in court but lost. When the dust settled, they had only eight months left to design, build and test a yacht able to repel the challenge of Fay's "Big Boat".
Morrelli designed a catamaran. They didn't have time to build a huge monohull, test it and race it.
They also figured, on a legal basis, that nowhere was it said in the deed of gift that you couldn't have a catamaran. They knew there would be legal action after the Cup - but they were bound to win it as a 60ft catamaran was nimbler and quicker than the Big Boat.
On the first day of racing, on September 8, 1988, Stars & Stripes (US1) beat KZ1 by a whacking 18m 15s. And we think yesterday's 52s margin was pleasing.
The aftermath was notable for what many Kiwis consider was poor behaviour by Conner - who, provoked by Kiwi skipper David Barnes for not sailing to his maximum, shot back: "I'm sailing a cat, someone else is sailing a dog". That led indirectly to the infamous interview with Paul Holmes when an angry Conner walked out.
Fay had tried through the courts to get the match fought in monohulls but failed. After the Kiwis lost convincingly, he took it to the courts again. He won but then the verdict was overturned on appeal.
The Cup was Conner's. For the time being.
Now, 25 years later, catamaran justice may be being served again. This time, the M&Ms (Morrelli & Melvin) are on New Zealand's side.
The score is 2 to -2. There's no sign of lawyers (yet).
And no one is sailing a dog.