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
Name:Fusion Pearl Reactive
Type:Reactive Pearl
Box Finish:5000 Grit LSP
Color:Black Pearl / Yellow Pearl
Core Specs
Int. Diff:0.000

The Motiv Sigma Sting is a pearl-covered symmetrical designed for medium oil patterns. It features Motiv’s Sigma core wrapped in a polished Fusion Pearl reactive coverstock.

Note to subscribers: The Motiv Sigma Sting was released during Bowling This Month’s transition period from print magazine to online magazine. We were not able to perform our standard three tester / four oil pattern test sequence on this ball. However, we did perform the on-lane testing required to

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.