Possible Clues:

• One-third of baseball's Triple Crown, for short
• Triple Crown stat.
• One hit might result in it, for short
• The Rangers' Nelson Cruz earned the last one of 2010
• Stat for a clean-up hitter
• Stat for Aaron
• Stat for 35-Down
• A dinger is at least one
• 62-Across got his last one on October 3, 1976
• Abbr. on a baseball card