Final answer:
Someone overcome with decrepitude, characterized by physical and mental decline, would be highly unlikely to win a tennis tournament due to the lack of physical prowess and agility needed for such competition.
Step-by-step explanation:
When someone is overcome with decrepitude, it means that they are in a state of physical and possibly mental decline, typically due to old age or illness. In the context of the question, which refers to physical and mental strength as demonstrated in Rama's Initiation and other given texts, decrepitude would greatly reduce an individual's ability to perform in physically demanding activities such as a tennis tournament. Therefore, being in a state of decrepitude would make it highly unlikely for an individual to win a tennis tournament, as the physical prowess and agility required to compete effectively would be significantly diminished.