While acknowledging it's still "probable" that Mariano Rivera will return from knee surgery to pitch next season, Andrew Marchand of ESPN New York reports that the future Hall of Famer "is having second thoughts about possibly retiring."
Rivera was pretty adamant about returning at the time of the injury, saying: "I'm coming back. Put it down. Write it down in big letters.
You know Rivera can still pitch as a closer. Where he will pitch is the question.
