Possible Clues:

• ''It's ---! We go into overtime!''
• "__ is like kissing your sister": football coach's lament
• End in ___ (be headed to overtime, perhaps)
• If two silkworms raced they'd end in ___
• ‘‘It’s ___’’ (even)
• "It's ___" (even score) (2 words)
• Break ___ (go into sudden death)
• Cause of overtime
• End in -- (have no winner)
• Two silkworms raced and ended in ___