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He resumed play with a planned three-game conditioning assignment to the American Hockey League Worcester Sharks on January 16 , 2009 , but he suffered another injury to the same leg during play on January 18 .
 American Hockey League, Worcester Sharks
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 American Hockey League, Worcester Sharks