- Sumo Black

First Impressions
The AMF Sumo Black is an absolute prime example of control and perfect readability on the lane. Powered by the proven Sumo Core, this ball offers very balanced, harmonious core dynamics with a 2.56 RG and a 0.035 differential. Combined with the precisely tuned solid reactive cover, the result is a surface that interacts with the oil in an extremely predictable and consistent way. The 2000 Abralon finish purposefully ensures that the ball picks up friction early and controls the midlane securely without ever looking unpredictable. Even its outward appearance conveys great stability and reliability, qualities that carry over seamlessly into the actual ball motion through the heads. The overall construction is designed to give the bowler clear feedback about the condition of the lane at all times.
Comparison
Looking at the Sumo Black head-to-head with the Storm IQ Tour Solid, its much stronger orientation toward control and predictability becomes very clear. The Storm IQ Tour Solid does offer a slightly more angular move off the backend, but it can react too sensitively or overreact on difficult oil patterns. This is exactly where the Sumo Black scores, with its steady, smooth and continuous arc toward the pins. Where the IQ Tour Solid tends to miss the breakpoint, the Sumo Black delivers the traction needed in the pocket to stay safely on line. It closes the gap between extremely strong balls and weaker models absolutely ideally. For bowlers who like the IQ Tour Solid but are looking for a calmer, safer option, this is the logical choice.
On the Lanes
On the lane this ball proves to be the perfect companion for medium to heavy oil patterns, especially on typical house shots or demanding sport patterns. It lets you get through the boards securely and develops a strong but wonderfully round hook that leads straight into the pocket. The smooth reaction to friction on the backend produces outstanding carry, since the ball transfers a great deal of energy into the pins instead of wasting it prematurely with too sharp a change of direction. Once transition sets in, the ball can still be used very effectively with small adjustments to the line before a ball change becomes necessary. It is a true benchmark for anyone who wants to build their game methodically, and it should deliver consistently high scores.