6998
Ranked 18th in the world , Stich might have been slipped into that spot ahead of Spain 's Felix Mantilla , who is 16th but had never been played in the Open and had been left out of the seedings originally .
 Felix Mantilla, Stich, Open, Spain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Felix Mantilla, Stich, Open, Spain