My kids were at the skateboarding at the local skate park, and it was way too crowded for me to photograph them safely and I noticed a baseball game going on beside the skate park. Went over a took a few photos before it got too dark (that's when I wish I had the 300mm f2.8 instead of the f4). I got a nice series of the player sliding on home. I have no idea how those refs can see anything with all that dust. The player was called out and I kept shooting, watching the catcher and his emotions.