Compare the specs of the Brunswick Fanatic BTU and Brunswick Mastermind Strategy side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.
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| Brand | Brunswick | Brunswick |
| Ball Name | Fanatic BTU | Mastermind Strategy |
| Cover Name | BTU (Better Than Urethane) | Relativity Solid |
| Cover Type | Reactive Solid | Reactive Solid |
| Box Finish | 500 / 1500 SiaAir | 500 / 2000 SiaAir |
| Color | Steel | Blue / Violet / Orange |
| Core Name | Low Differential I-Block Symmetric | Modified Mastermind Asymmetric |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.601 | 2.504 |
| Total Diff. | 0.030 | 0.048 |
| Int. Diff. | 0.000 | 0.013 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |