Related Clues:

• Get one to advance to the next round without playing an opponent
• Have a double of this before you go
• This extra is no greeting if it comes at the double
• One might go and say this at the double
• At the double at parting
• It's said to be good at parting for 22 down
• Such extra may come at the double on parting
• Fare well with such an extra double
• "Sayonara!"
• It renders a seed inactive
• Exit line
• 'g2g' follower
• "Bon voyage!"
• Nicer "Good riddance"
• Famous last word?