Mormons in the major leagues. 
Correct (I felt Dale Murphy would have been too obvious).
You’re up!
Gary Sheffield
Jason Bay
Major leaguers who played in the Little League World Series.
Damn it. You win.
Tom Glavine
Tony Gwynn
initials?
Silver Slugger Award winners.
No and no.
Christy Mathewson
Clete Boyer
Players whose brothers also played in the major leagues?
Good guess, but not the right answer.
Tony Conigliaro
Players who were TEAMMATES with their brother?
Yes
Jimmie Foxx
Prince Fielder
Players with nouns in their names?
True, but not exactly the answer I was looking for.
Alright, how about players who carded a 50+ HR season younger than 25?
You’re on the right track.
Sammy Sosa
Led the league in hrs before 25?