My husband and my middle son are in a bowling league that meets on Monday nights. After several weeks of pause, they have been able to resume. But, since my husband had a prior commitment last night, I accompanied my son to the league. In the days prior, my son and I discussed the differences between how he bowls and how his oldest brother bowls. They have been in bowling leagues since they were in the elementary grades, and they were on our local high school's bowling team. We are no strangers to bowling, yet we analyzed where to stand and how to adjust to oil patterns. I know from my years watching my sons and their teammates that there are reasons for using one bowling ball over another based on whether the ball needs to curve or not. Often I can tell if they will get strikes based on how the ball leaves their hands.