Possible Clues:

• Fellow player
• Collectively, they all do something for lover in group photograph
• Tinker, Evers or Chance
• Fellow player twice cooks meat
• Is not an opponent of drink for couple of Frenchmen at tea break?
• One who might go to bat for you?
• One of eleven English, American and French men in foreign museum
• Dugout sharer
• Rice, to Montana
• One on the same side