Red Sox: J.D. Martinez aims to bust out of slump in Detroit
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J.D. Martinez: 'I haven't been very good' in 2020, but he's hip to what has been the problem - The Boston Globe
J.D. Martinez reflects on five years with the Red Sox as curious season winds down - The Boston Globe
J.D. Martinez slump caused by 'bad habits
Boston Red Sox's J.D. Martinez explains why he has hit just 10 homers this season; 'It's clear as day to me'
Red Sox notes: J.D. Martinez off to typical slow start
Boston Red Sox's J.D. Martinez projected for 58 extra-base hits in 2022, before hitting free agency
In Home Run Era, Red Sox' J.D. Martinez Is More Than 'Just Dingers' - The New York Times