Cleaning pool balls with rubbing alcohol is a terrible idea (unless it is followed up by a secondary cleaning with something else) ... it can dramatically increase the typical amount of throw. For more info, see the video and articles on the ball cleaning and surface treatment resource page.WPA sanctioned events specify:
All balls must be composed of cast phenolic resin plastic and measure 2 ¼ (+.005) inches [5.715 cm (+ .127 mm)] in diameter and weigh 5 ½ to 6 oz [156 to 170 gms].
Balls should be unpolished, and should also not be waxed.
Balls should be cleaned with a towel or cloth free of dirt and dust, and may also be washed with soap and water.
Balls contaminated with any slippery substance - treated with a polishing or rubbing compound and/or waxed - must be cleansed and dewaxed with a clean cloth moistened with diluted alcohol before play.
Those ball-cleaning rules need to be updated.
Regards,
Dave