Complex sentence: Williams, the beneficiary of three consecutive double faults hit by Azarenka, saved three match points and broke back to force a third set tiebreak, which she won 7--6 (7--1) to advance to the quarterfinals.
Split into simpler sentences: Williams, the beneficiary of three consecutive double faults hit by Azarenka, broke back to force a final set tiebreak, saving three match points in the process. William won the tiebreak 7--6 (7--1) to advance to the quarterfinals.