Qualify

You have two options. You die, or you Qualify.
Sixteen-year-old Gwenevere Lark is determined not only to Qualify but to rescue her entire family.
If you are good enough to Qualify, you are eligible to compete in the brutal games of the Atlantis Grail, which grants all winners the laurels, high tech luxuries, and full privileges of Atlantis Citizenship. And if you are in the Top Ten, then all your wildest wishes are granted . . . Such as curing your mother's cancer.
There is only one problem. Gwen Lark is known as a klutz and a nerd. While she's a hotshot in classics, history, science, and languages, the closest she's come to sports is a backyard pool and a skateboard.
This time she is in over her head, and in for a fight of her life, against impossible odds and world-class competition-including Logan Sangre, the most amazing guy in her school, the one she's been crushing on, and who doesn't seem to know she exists.
Because every other teen on Earth has the same idea.
You Qualify or you die.