Dunnichay is 5 feet tall and weighs 93 pounds. Ishimatsu is 4-9 and 90.So tiny, and yet so tough."I don't know if that comes from being the youngest of four and getting picked on," said Dunnichay's mother, .The Indianapolis-trained duo will represent the United States in the synchronized 10-meter event at Melbourne, Australia, where the worlds run from Monday through April 1.Dunnichay, of Elwood, followed brother into diving. Caleb, 19, won a state title and is now a freshman diver at Auburn University. Another brother, , 16, set Elwood High School football records by rushing 52 times for 346 yards and five touchdowns in one game.Ishimatsu comes from sturdy stock, too. One grandmother spent teenage years living in a Japanese-American internment camp during World War II. An older sister, , 17, endured elbow pain until injuries finally drove her out of gymnastics.Haley also abandoned gymnastics. She began diving only 21/2 years ago. Now, her Olympic dream could be realized in that sport.Their father, , moved his daughters to Indianapolis from their Seal Beach, Calif., home to nurture that dream at USA Diving's national training center."The Olympics, make it or not, the journey is an opportunity in and of itself," the father said. "They're both learning quite a bit from it."Dunnichay and Ishimatsu appeal to diving judges because of similar shapes, but they are also in sync in other ways.Both are shy and bright. They enjoy reading and math, not public attention. Dunnichay was embarrassed when she was introduced at one of her brother's basketball games this year.To accommodate training, the girls are home-schooled and thus work at their own pace. The pace is fast. The goals are high."Right now I'm thinking about worlds," Dunnichay said. "But I think about going to the Olympics a lot. It's something I really want to do."Coaches were thinking about the Olympics when they paired Dunnichay with Ishimatsu. Ishimatsu had more international experience, but Dunnichay caught up by learning harder dives within 21/2 months.Dunnichay has role models in her brother and his best friend, , 17, the national champion on 10-meter and a World Cup silver medalist. Dunnichay's mother drops her off at a Noblesville church, and then Boudia transports her to the Natatorium at IUPUI.U.S. coach said the girls were toughened through selection camps that required consistency. They edged the Indiana University-trained duo of 2004 Olympian and .The 14-year-olds made the team on merit, Wingfield said, and not because USA Diving was getting them ready for 2008. The girls are "kind of worldly," he added, which should help on a world stage.

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