Final answer:
The owner is most likely to win because Ricky's demand for more money to perform his preexisting contractual duty lacks new consideration, which is typically required for a contract modification to be enforceable.
Step-by-step explanation:
The student's question deals with contract law and whether a modification to a contract is enforceable when it involves additional compensation promised under a preexisting duty. In this case, the scenario describes a situation where Ricky, a basketball player already under contract, demands more money per game from the team owner and refuses to play unless the owner agrees. After the owner consents, Ricky later sues for the additional pay because the owner refuses to pay the extra amount after the season. The most likely answer to this situation is that the owner wins; this is because Ricky's new promise of playing the basketball games, which he was already contractually obligated to do, is not supported by new consideration. In contract law, a modification of a contract must generally be supported by new consideration from both parties unless the modification falls under specific exceptions, such as those found in the Uniform Commercial Code (UCC) relating to the sale of goods, which does not necessarily apply to employment contracts like Ricky's.