- SD-73 Pearl

First Impressions
With the SD-73 Pearl, Roto Grip brings a fascinating new development to market that stands out above all for its exceptional length and late reaction. Inside works the dynamic SD Core, which with a 2.50 RG and a 0.050 differential ensures very clean motion through the front part of the lane. The Pearl Reactive cover is specifically tuned to store the ball's energy extremely efficiently. The nature of the surface with its polished finish supports this trait massively, letting the ball glide effortlessly through the heads without building friction early. Visually it's a real eye-catcher, and it immediately conveys that this model was designed primarily for later, sharper changes of direction. The technical match between core and cover is extremely harmonious and purposeful here.
Comparison
Comparing the SD-73 Pearl with the Storm Hy-Road Pearl, the glaring differences in backend reaction stand out immediately. The Storm Hy-Road Pearl tends to read a bit earlier, while the SD-73 Pearl holds its energy a decisive fraction longer and then reacts noticeably more aggressively to the dry area. That trait makes it the perfect complement in your arsenal when the Hy-Road Pearl starts losing energy in the pocket or entering too flat. Although both balls are aimed at similar, lighter oil patterns, the SD-73 Pearl offers a noticeably more dynamic angle. It's the ideal solution for situations in which the Hy-Road Pearl no longer generates enough drive, since it creates the necessary entry angle.
On the Lanes
This ball shows its greatest strength once the lane has already been broken in a bit and the transition has clearly set in. It needs a certain amount of friction in the backend to develop its characteristic hook, which delivers maximum, explosive carry. When the boards in the front part of the lane dry up, it lets you systematically move further inside and attack the pocket from a much deeper angle. It's very well suited to medium to dry conditions and an excellent choice if you're looking for a clean, quick-reacting surface. With its forgiving nature on shots missed to the outside, it should keep your scores stable at a very high level even in the late stages of a tournament.