Was that Mark Roth ball a standard plastic ball with a pancake core? The only information I can find about the balls is: "The Plastic Ball Championship will require all 64 players to use two identical special Mark Roth custom-designed bowling balls manufactured by OntheBallBowling.com."
Custom-design? Did they have a core or not?
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Haywood
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"Let every nation know, whether it wishes us well or ill,
that we shall pay any price, bear any burden,
meet any hardship, support any friend, oppose any foe,
in order to assure the survival and the success of liberty."
--JOHN F. KENNEDY
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