During the Southern Nevada’s USBC Association annual meeting a question regarding using house balls with a balance hole was asked. Here is the answer which also appears in the Bowling Technology Update link shown below:

As a courtesy to league and tournament participants, house balls may be used during USBC-certified competition though they are not specifically posted on the USBC Approved Ball List. There are specific requirements that are listed in the document.

Note: A ball left in a bowling center by a bowler to be used as a house ball is not considered a house ball.

If the house balls have balance holes, they cannot be used. It would be subject to the same rules starting Aug. 1, 2020 that all balance holes need to be eliminated and deemed illegal for use in USBC-certified competition.

In the past few years a number of changes have been made and all bowlers should be aware of the newest rules pertaining to bowling balls. Please read the following document to learn about the changes to Balance Holes, Gripping Holes, Oil Absorption and Ball Cleaners.

Bowling Technology Updates

USBC has noted that the balls listed below, while still approved by USBC, cannot be used in a USBC National Tournament.  They have left it to the local association to determine whether we will allow these balls to be used in our events.

Storm Phaze 4
Storm Electrify Solid
Storm Trend 2
900 Global Altered Reality
900 Global Wolverine
Roto Grip UFO Alert

The Southern Nevada USBC Association’s position is that since these balls are still USBC approved we have no reason to say these balls cannot be used in our tournaments or our sanctioned leagues.

However, USBC recently revoked the approval of two bowling balls for use in all USBC-certified competition. These balls are:

Storm Spectre – effective March 14, 2022

Purple Hammer (produced in 2016 or 2017 with a serial # starting with 6 or 7) – effective March 21, 2022

These balls may not be used in any USBC-certified competition. A league or tournament cannot authorize the use of equipment not approved by USBC. A player using a ball on the non-conforming ball list subjects those games to forfeiture.