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The following year , he and partner , compatriot John Sharpe , reached the second round , where they lost in straight sets to the formidable tandem of Roy Emerson and Rod Laver .
 Roy Emerson, Rod Laver
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Roy Emerson, Rod Laver