Related Clues:

• Grand slam, e.g.
• Skillful act
• Courageous act
• Daring deed
• Potential Guinness World Records entry
• Noteworthy achievement
• Remarkable deed
• Heroic deed
• Notable exploit
• Tale of heroism
• Guinness entry
• Heroic act
• ''Guinness World Records'' entry, e.g.
• Notable act
• Moon landing, notably