Bowler Ratings


Bowler ratings are from 1 to 10 in order of Stroker (ST), Tweener (TW), Cranker (CR)

Note: Ratings are only available to our premium members.

General Info

Coverstock Specs
Type:Reactive Pearl
Box Finish:1500 Grit Polished
Color:Neon Green Pearl / White Pearl
Core Specs
Int. Diff:0.000

The Deranged is the follow up to the Disturbed in the HP3 line for Roto Grip. The Deranged uses a pearlized 61MH coverstock to surround the same core as used in the Disturbed.

The Deranged gave us a big skid/flip motion as it made its way down the lane, with our best reaction on the medium test pattern. Cranker loved that he could really open up his angles on this pattern with the Deranged. He was easily circling the ball around the part of the lane where Stroker and Tweener were lined up. Stroker and Tweener liked the big reaction

The BTM Ball Testing Team

About The BTM Ball Testing Team

The BTM Ball Testing Team is led by Eric Martinez. Our team of three testers has thrown and reviewed hundreds of bowling balls for Bowling This Month. When not testing balls for BTM, Eric owns and operates University Pro Shop in San Antonio, TX and he is an avid competitive bowler. Click here to learn more about how we test and review bowling balls.