Related Clues:

• Unobstructed
• U.S. ___
• Not secret or hidden
• Not yet decided
• Big golf tournament
• Both pros and amateurs may be in one
• Take the top off
• Start admitting customers
• Speaking freely
• Major tennis event
• Without concealment
• Tourney for all
• Uncork
• Airy
• ''___ mouth, insert foot''