Related Clues:

• Let happen
• Tennis umpire's cry
• Do-over, in tennis
• Fail to prevent
• Word with up, out or down
• ''___ It Be'' (Beatles)
• Ease, with 'up'
• Call at the net
• Suffix for book
• Net judge's cry, perhaps
• '-- 'er rip!'
• Tennis court call
• Disappoint (with ''down'')
• Service to be repeated
• Do-over at Ashe