Who is the Jaguars’ mysterious shortstop?

Danny Walker is one of the best players his team has; in fact, his adoptive parents and sister consider him a shoo-in for the shortstop position on the All-Star team. But that was before Tammy Aiken, the opposition’s new “hot dog” shortstop, showed up. Danny has a sinking feeling the new-comer is as good as he is — a feeling her stats back up. And yet something besides her threatening to steal the All-Star spot from him is bothering him. The more he watches her, the more he becomes convinced that he’s seen her — or someone just like her — play before. Why does Tammy seem so familiar?