Related Clues:

• MLB statistic
• FDR's time in office, e.g.
• The Wild West, e.g.
• Wisk alternative
• Geologi-cal time
• Chronology component, perhaps
• Span
• It's a big stretch
• Pitching number
• It should be low on a diamond
• Golden __
• Chunk of time
• Big Band or Disco period
• The 80's, say
• Eventful time