Why isn’t my equipment working as well as it used to?

As you play matches, the health of your bowling balls will degrade due to the wear on the ball. This happens gradually across a number of matches, and impacts the stats of that ball. Once a ball is at zero health, its stats are at the lowest they can go, and that ball should be cleaned or repaired if you wish to continue using it, or scrapped if you no longer want that ball.

The maximum health of a ball also degrades (much more slowly) as you play matches - this cannot be improved in any way.

You can see the health and the maximum health of each ball in the ball dialog within the Gear menu.