SOFIA, Bulgaria (AP) - Joe Williams beat Romania's Eugen Preda 3-1 Friday to advance to the quarterfinals of the World Freestyle Wrestling Championships.     Williams, who is from Iowa City, Iowa, turned Preda for a 2-0 lead in the first period of the 167-pound division match, then had a takedown for a 3-0 lead in the second period.     Preda had a late takedown.     Williams faces Hajizadeh Joybari Mehdi of Iran in the quarterfinals. Mehdi overpowered Turkey's Gokhan Yavaser 4-2 Friday.     In the women's 150-pound class, Tocarra Montgomery of Cleveland took a 4-0 lead and got her third straight pin, defeating Finland's Heidi Martti at 1 minute, 21 seconds.