When, not if, Carmelo or La La Anthony pull the divorce trigger, there will be a road map on how they will divide their $200 plus million fortune.

Sources connected to the couple tell us they signed a prenup before getting hitched in 2010. We're told the prenup benefits Carmelo way more than La La, and for obvious reasons. He's in the middle of a $124 million contract with the Knicks and has earned north of $200 million in his career.

Melo has a lot more in the money dept. He's been a top brand ambassador to the Jordan brand and Foot Locker.

As for La La ... she was making money as an MTV VJ when they met and has continued to work through the marriage as an actress, model and producer.

All that said, prenups are not necessarily airtight and are frequently challenged by the person who ends up with the short end of the stick.