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A scoring play that ends the game is called a " walk-off " , a term originally coined by Hall of Famer Dennis Eckersley in about 1988 , who referred to game-ending home runs as " walk-off pieces " , as all that is left for the visiting team to do was to walk off the field .
 Dennis Eckersley
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Answer:
 Dennis Eckersley