This is a fifty-card deck. The front of each card shows a cartoon of a sport or sports-related equipment. The back shows that sport or object in Japanese, kana, and English.
Graphical flashcards are great because you don't really need the English. 99% of the time you'll look at a picture, think or say the thing in Japanese, and move on. It's only when the pictures are ambiguous, or if the sport indicated is new to you, that you'll need to see the English.
This deck is in the Public Domain. If you want more information, see
dperkins.org.