Possible Clues:

• 30 minutes, in the N.F.L.
• "You don't know the ___ of it!"
• --- Moon Bay, Ca.
• Even share, perhaps
• Top or bottom, in baseball
• One who became Falstaff's companion following a drink
• Either 50 of 50/50
• Two, to four
• One of two that make one
• Moiety