PLANT CITY, Fla. -- She registered another perfect pitching record this year, 12-0, for her Little League team.

She threw her second perfect game -- and predicted this one just hours before she did it.

Her fastball hits the mid-60s, and she can send opponents to the bench in tears, embarrassing them with a knuckleball she learned from former major league knuckleball legend Joe Niekro.

Meet Chelsea Baker, a girl pitcher in a boys' league.

Chelsea Baker says she uses the negative comments she hears from opposing players and their parents as motivation. J. Edwards

Heads are turning in Plant City, where Chelsea hasn't lost a sanctioned Little League game in four seasons.

Although it is a little early to call the 13-year-old the next big thing in baseball, she's a sought-after pitcher who has the attention of respected talent evaluators, including former Boston Red Sox general manager Dan Duquette. They see grand possibilities in her developing knuckleball, already-hopping fastball and strong hitting skills that sparked a .604 batting average this past season.

"She is definitely one-of-a-kind," said Keith Maxwell, one of her coaches and a former minor leaguer who coaches Little Leaguers across several states. "I've had an opportunity to play with some girls coming up in Little League, and they were actually pretty good ballplayers. Some of them actually made all-star teams and that kind of stuff. Chelsea is on a whole different planet compared to them.

"Chelsea Baker is by far the best female 13-year-old girl [baseball player] in the United States. She is the best I've ever seen in my life hands down. The sky is the limit."

Baseball until she no longer wins

It's baseball, and it will be that way so long as Chelsea has a say.

"I don't like to play softball," she said.

Opponents' parents often remark about Chelsea -- not always quietly or kindly.

The most common: "'Go play softball with the girls' -- we get that a lot, and we have gotten that a lot over the last three years," her mother, Missy Mason Baker, said. "'When is she going to move to softball?' At some point, maybe she might have to go play softball, but right now as good as she is doing and she is able to keep up and that is her goal, I am going to stand behind her and let her continue playing baseball as long as possible."

"She tried softball," said Rod Mason, her stepfather and coach. "She doesn't like it, so baseball is her deal."

His thoughts about when softball may enter the picture: "When she can't strike out little Johnny no more."

Such talk does not affect her, Chelsea said; it just motivates her.

"I think they say stuff like that because they are jealous," she said.

Chelsea's Little League teams are 95-8-2 the past four years with three city championships, one city championship runner-up, two tournament of champions titles and two District IV championships. She struck out 127 batters in 60 innings this year.