Boston Red Sox Series Preview: Can Hirokazu Sawamura find a trustworthy second pitch? - Over the Monster
Boston Red Sox 2021 in Review: Hirokazu Sawamura's MLB debut - Over the Monster
Red Sox take reliever Hirokazu Sawamura off COVID-19 injured list
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Boston Red Sox HIROKAZU SAWAMURA Signed 2021 Topps Card #US117 RC
Spotrac Research, News, & Reports
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Red Sox release Hirokazu Sawamura – Blogging the Red Sox
Hirokazu Sawamura Baseball Trading Card Database
Hirokazu Sawamura's early outings aren't encouraging, but Red Sox expected an adjustment period - The Boston Globe
Hirokazu Sawamura Stats, Fantasy & News
2021 Update Base #US322 Adam Ottavino - Boston Red Sox. 2021 Update Base #US320 Jose Trevino - Texas Rangers. 2016 Score Football. 2012 Cooperstown
2021 Update Base #US117 Hirokazu Sawamura - Boston Red Sox