Why do different football competitions have different balls?
BBC Sport explains the regulations around the size, weight and dimensions of footballs, and how much these can vary.
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The best Ohio high school bowlers have more than one personalized ball. Here's why
If that takes five balls or, in the case of a recent central Ohio high school state champion, two dozen, so be it. Different balls help bowlers navigate various scenarios, including oil patterns ...
Rickie Fowler on changing and testing golf balls
Six-time PGA Tour winner Rickie Fowler signed a golf ball and glove deal with TaylorMade in 2019 and started using the ...