I loved this story from beginning to end. The only issue I really had was, as there were so many different characters, it seemed as if you may have gotten them confused. At one point there was a Conrad Diaz, and in the end there is a Jess Diaz. Did Conrad become Jess? It just confused me as there are two different characters with the same last name, that appear, on the first read-through, to be the same person. Although Jess was present on the soccer team, it just felt like a different person.
Now, to get away from the Jess/Conrad thing. It seemed as if you occasionally mixed people up in conversations. Like when Janice was consoling Jeremy and you, or she, referred to Jeremy as Jess. And when Mrs. Diaz was talking to Jeremy's father on the phone, you wrote Jereame, I think. Just a typo, but still, it threw me for a second.
But overall, I really enjoyed your story. And I can't wait for more.