If John can keep his emotions in check, as it's his first time on TV, I think he really does have a great shot!
He obviously had a really good look this week, so again, emotions, and being able to find the line to play by the time the other guys get a chance to tear up the lanes, I think he'll be fine.
If it were me, I'd be such a nervous wreck for the first few shots, I'd hope just not to leave a split or miss a spare.
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Ahhh Disco Biscuits!