Meanwhile world number one Carolina Marin staged a gripping comeback against South Korea 's Sung Ji - Hyun to book a second - straight finals appearance .
World number one Carolina Marin almost did n't make the world championships due to injury .
Meanwhile world number one Carolina Marin , who almost did n't make the world championships due to injury , staged a gripping comeback against South Korea 's Sung Ji - Hyun to book a second - straight finals appearance .