Possible Clues:

• Third baseman David Freese was its MVP in 2011
• Pennant race inits
• Diamond semifinal
• Sports news of Oct. 2016
• Oct. baseball round
• MLB semifinal round
• It was first won by the N.Y. Mets in 1969
• Certain pennant winner's victory
• 2006 playoff between the Cards and Mets, for short