Are you continuously squeezing the
bowling ball when you play? To me, this most commonly happens with a
ball that doesn't fit your hand right, more specifically, bowlers
tend to squeeze their thumb during their arm swing and prior to their
One big factor is your climate. If you bowl in a colder climate, your thumb is going to shrink, so naturally you need some tape in your thumbhole to keep the same feel...as you are bowling, you can then take some out.
In a more humid climate, your thumb will expand more quickly...this is why I prefer drilling a thumbhole a bit bigger then what the pro shop wants...I then control the feel of the thumbhole and I eliminate the possibility of my thumb sticking in the ball when it expands.
When you get a ball that fits you right, you can then simply push the ball up and then let your arm fall naturally, letting the weight of the ball/gravity control your armswing. Most likely you have a ball that isn't fitting 100% and coupled with any forearm muscle engagement, that is causing you to squeeze the ball (less it falls out of your hand during your armswing/delivery!).
-If your ball is fitting fine, just try and let the ball control your armswing
-If your ball, particularly your thumb, is not fitting, have a certified ball drilled measure you again and make sure your ball is fitting properly, and remember to take a bit extra from your thumbhole so you can control how it is fitting.
One final note on thumbholes: With today's new technology, I highly recommend the urethane thumb insert over no insert...otherwise your thumb will tend to catch on the ball, which will kill any consistent release you have and can actually hurt you in terms of irritating your skin or causing abrasions.
I hope this helped...it's hard to do this on the internet without seeing your equipment/release, but no doubt about it: If the ball isn't fitting you 100%, you are going to squeeze it, bar none, if you need additional info you can check out the Ultimate Bowling Guide eBook, there is a small price for it, but it's well worth it in my opinion.
fought the same problem for quite a few years...not until I just
bought my new ball in 2005 did I finally get it to fit me the way it
needed to (my span was about 1/4 to 1/2 inches too short, this
doesn't sound like much, but it caused me to squeeze the ball. Now
that my span is more stretched out, I can just let the ball fall
naturally and know that my grip will keep it in my hand.
Tim's Bowling Guides
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