"Without a nap, a tennis ball travels much more quickly and further... It is almost impossible for the opponent to react to the shot" While the rules of golf determine the size and weight of golf ...

However, north of Kansas City, there were reports of tennis ball-sized hail in Lexington, Mo., and golf ball-sized hail in Kearney, Mo., and Holt, Mo. This content is imported from Facebook.

Gao and his research team have also published studies on head injuries induced by golf ball strikes and ballistic impacts. More information: Yongqiang Li et al, Head Injuries Induced by Tennis ...