Possible Clues:

• NFL play review technique
• Replay type, briefly
• Race arbiter, at times
• 15 button's capital, wanting its first letter second
• Technology used to review a call
• 'Let's see that again in ___'
• A sports highlight may be seen in it
• Way to verify an ump's call, for short
• Shortened type of replay requiring extra time?
• Instant-replay feature