https://www.nsf.gov/news/special_reports/summer_olympics/
Designing safety helmets, fluid mechanics of swimming, and more in this nine part video series (2012 games).
Baseball will be a sport in Tokyo’s Summer Olympics. Here are some books about the science of summer sports:
Bazemore, Suzanne. Soccer: How It Works.
Buckley, James Jr. It’s a Numbers Game! Baseball: The Math Behind the Perfect Pitch.
Slade, Suzanne. Basketball: How it Works.

Sohn, Emily. Skateboarding: How It Works.
Ventura, Marne. Learning STEM from Baseball: How Does a Curveball Curve?