Novak survives Alexandr scare

Desperate Novak Djokovic fought back from a set and a break down to defeat Alexandr Dolgopolov 6-7 (3/7), 7-5, 6-0 Tuesday, salvaging hopes of defending his Miami Open title.

World number one Djokovic won 24 of the last 27 points to reach a quarterfinal against Spanish sixth seed David Ferrer, a 7-6 (7/5), 6-0 winner over Frenchman Gilles Simon at the ATP and WTA hardcourt tournament.

Ukraine challenger Dolgopolov was unable to stretch his lead to a double break in the second set, Djokovic saving two break points in the fourth game.

The Serbian top seed turned the match on its head in a 22-minute final set in which he could do no wrong, sustaining his chance for a US double after his Indian Wells final victory over Roger Federer.

Britain's Andy Murray won his 500th career victory, defeating South Africa's Kevin Anderson 6-4, 3-6, 6-3.

The third-seeded Scotsman, who holds two Grand Slam titles, needed his best effort against his 17th-ranked rival.