Shots with dirty grooves lost 7mph of ball speed – 5.5% – wh..
🕑 Added 2024-04-23 12:13:14 +0000 UTC
Shots with dirty grooves lost 7mph of ball speed – 5.5% – which is huge. Backspin (essentially control) fell a jaw-dropping 52.5% (to 2,566rpm from 5,399rpm), as did height (down six yards, or 20%) and descent angle (down 16.3%; 7°). Moral of the story! Always clean your grooves!
