Roberta Colindrez's character, Lupe, is a fierce pitcher with something to prove, even when her own body rebels against her.
Lupe, like many of the other characters, is an amalgamation of bits of real players' stories with some fiction thrown in. There's a little in her arc of Margaret "Marge" Villa, one of the few Latina players in the real AAGPBL. Just as Lupe is marketed as being "Spanish," Marge was required to "pass" as white during the segregated era.
Lupe also borrows a little from Blair, whose pitching career faltered when an injury made itself apparent.
"You've heard of Nolan Ryan, haven't you? He had nothing on me. You believe that too, don't ya?" Blair joked in an MLB interview.
