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Regal Trophy Final Appearances Richard Russell played in Castleford Tigers ' 33-2 victory over Wigan in the 1993 – 94 Regal Trophy final at Headingley Stadium , Leeds on Saturday 22 January 1994 .
 Russell, Castleford Tigers, Wigan, Leeds
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Russell, Castleford Tigers, Wigan, Leeds