Layout is pin in the palm weight hole down.

I am a left handed tweener with a 325 rev rate.
Sinister.JPG
I am usually not a big fan of asymmetric core ball motion, but I have to make an exception for the Sinister. If I didn’t know it was an asymmetric ball, I would have thought it was a symmetric ball. I recently used this ball in a tournament where they decided to put out a ton of units out, so I had to close up my angles and use the strongest ball I had i.e. Sinister. I didn’t leave any flat 7 pins, which I am rev impaired and that never happens on higher volume patterns for me. This is a great ball that would fit in any arsenal out there, especially tournament players.

Jeff Mersch
Roto Grip Amateur Staff