As stated, I do not think there is a difference in bowling between a round or oval thumb hole. It just depends on how your thumb looks.
My son used to have a round thumb, but after a fractured thumb, it is not oval. SO all his equipment had to be changed so he could get his thumb in the ball.
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T.J.
BOWLING IS FUN NO MATTER WHAT YOU SCORE. BUT A 300 IS ALWAYS NICE.
Awesome Revs(2), Finish, Fury, Mammoth
GOOD LUCK AND GOOD BOWLING!!!
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