Patina by Jason Reynolds
Four kids are chosen for an elite middle school track team--Ghost, Lu, Patina, and Sunny--a team that might even make it to the Junior Olympics if they can learn to work together. But they come from very different backgrounds and have wildly different personalities that often clash. Patina runs to get away from her problems at home, but now she must learn to control her anger enough to work as a team.
Review from Booklist Reviews:
When Patina "Patty" Jones, the fastest girl on the Defenders track team, comes in second place in a race-a fact she finds unacceptable-her rage is so intense that she mentally checks out. In an effort to make her into a team player, Coach assigns her to the 4x800 relay race and makes the relay team do hokey things like waltz in practice to "learn each others' rhythms." Pfft. Meanwhile, Patty feels completely out of place at her rich-girl academy. And then there's the really hard stuff. Like how her father died, how her mother "got the sugar" (diabetes) and it took her legs, and now Patty and her little sister live with their aunt Emily and uncle Tony. Reynolds' again displays his knack for capturing authentic voice in both Patty's inner monologues and the spoken dialogue. The plot races as fast as the track runners in it, and-without ever feeling like a book about "issues"-it deftly tackles topics like isolation, diverse family makeup, living with illness, losing a parent, transcending socioeconomic and racial barriers, and-perhaps best of all-what it's like for a tween to love their little sister more than all the cupcakes in the world. The second entry in the four-book Track series, this serves as a complete, complex, and sparkling stand-alone novel.