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His 25 home runs as a rookie set an American League record for second basemen , surpassing Detroit Tiger Charlie Gehringer 's previous record of 19 .
 American League, Detroit, Charlie Gehringer
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 American League, Detroit, Charlie Gehringer