Dancers must impress the judges with their moves and rigorous routines at the Las Vegas callback auditions in order to remain in the competition. Tonight, the judges will select the 20 dancers - 10 males and 10 females - who will compete for viewers' votes in the weeks ahead. See who struts down the path to the championship and who trips up in this episode of SO YOU THINK YOU CAN DANCE.

Last night the Top 20 dancers showed America their best moves. Find out which two will have to pack up their dancing shoes when the voting outcome is revealed live on the first results show of the season for SO YOU THINK YOU CAN DANCE.