Unheralded Beatriz Haddad Maia dominated the final two sets and recorded a 4-6, 6-1, 6-2 victory over fourth-seeded Maria Sakkari of Greece on Friday to advance to the third round of the Miami Open. The left-hander from Brazil converted five of her seven break points while defeating a top-five-ranked player for the third time in her career. Sakkari is ranked third in the world. "I knew the match would be tough," Haddad