George Perez helps his son Erick Perez get ready to compete in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Andrej Kosiak, center, and Julian Zea compete in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Andrej Kosiak, foreground, and Julian Zea compete in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Ela Svabek, foregound, and Alyannah Hernandez, left, compete in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Kids wait to compete in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Jamie Villanueva helps her daughter, Lucana, 4, get over her nervousness before she competed in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Jamie Villanueva helps her daughter, Lucana, 4, get over her nervousness before she competed in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media

Aidan Ace, second from left; Itxel Guerrero, center; and Conor Grant, second from right, laugh before they competed in the American Taekwondo United qualifying tae kwon do tournament at the Oak Lawn Pavilion in Oak Lawn, IL on Sunday April 22, 2012. | Matt Marton~Sun-Times Media