Passionate Sports Girl

Anime and Manga

 * Azumanga Daioh: Kagura is a strong all-round athlete, second only to Sakaki in talent. Near the end of the series, she even announces her intentions to try out for All Japan Women's Swim Team.
 * Tsubaki from Your Lie in April is in the baseball club and is much more passionate about it than her studies.

Western Animation

 * Total Drama has a few examples, most notably Sky, Eva and Jo. The latter two are semi-antagonistic, but not completely stereotypical Jerk Jocks.
 * Alex from Totally Spies! is the most athletic of the three, although her favorite sport appears to be soccer.