Found this article today on GolfWRX. Here are the highlights. Very interesting. (I always thought that the tour pros play the same ball as we do. Guess not).
Patrick Reed's ball change pays dividends,
Good stuff from PGATour.com's Andrew Tursky on Patrick Reed's projectile switch..."While Reed has switched golf balls multiple times throughout 2019, he had settled into a Titleist Pro V1 "left dot" prototype. Fordie Pitts, Titleist's Golf Ball R&D rep, once explained to PGATOUR.COM that the TOUR-only, left-dot prototype golf ball spins "a little bit less and aerodynamically it flies a little lower."