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He then was offered a wild card to play at the 2011 US Open , but was unable to play due to foot injury which ended his season .
 time: 2011 US Open
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 time: 2011 US Open