MARBELLA, Spain (Reuters) - Top seed Victoria Azarenka pulled out of the Andalucia Open at the quarter-final stage with a thigh muscle injury on Friday.
The Belarusian was 4-0 up in the first set against Spain's Maria Jose Martinez when she pulled up in pain. She had treatment courtside but was unable to continue.
Fifth seed Martinez progressed to Saturday's semi-finals where she will meet another Spaniard Carla Suarez, who beat Germany's Tatjana Malek 4-6 6-1 6-2.
(Writing by Mark Elkington, editing by Alison Wildey)