Wozniacki looked set for a comfortable win but Suarez Navarro reeled off four straight games to take the second set .
Wozniacki won the title in 2010 and reached the final in 2014 .
Wozniacki , who won the title in 2010 and reached the final in 2014 , looked set for a comfortable win but Suarez Navarro reeled off four straight games to take the second set .