Callaway Golf appears to be in decline if you look at their branding
Nike Golf Balls | Found Golf Balls
McIlroy to use custom Nike golf ball at U.S. Open
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Nike Golf Balls
Amazon.com : Nike Mix Golf Balls - Top Styles! 24 Near Mint Quality Used Golf Balls (AAAA RBZ One Tour and More golfballs!), White, One Size : Sports & Outdoors