Best and worst MLB free agency signings of 2021 so far, including Mets and YankeesTaijuan Walker and DJ LeMahieu are among those on the list6/18/2021, 5:34 PMJohn HarperMLB Freelance Writer/On-air TalentDJ LeMahieu, Taijuan Walker, and George Springer / USA TODAY Sports/SNY Treated ImageJun 13, 2021; Detroit, Michigan, USA; Chicago White Sox starting pitcher Carlos Rodon (55) pitches in the third inning against the Detroit Tigers at Comerica Park. / © Rick Osentoski-USA TODAY SportsJun 17, 2021; New York City, New York, USA; New York Mets starting pitcher Marcus Stroman (0) punches his chest during the seventh inning against the Chicago Cubs at Citi Field. / Vincent Carchietta-USA TODAY SportsJun 12, 2021; Philadelphia, Pennsylvania, USA; New York Yankees first baseman DJ LeMahieu (26) reacts after hitting a three-run home run during the ninth inning against the Philadelphia Phillies at Citizens Bank Park. / Kyle Ross-USA TODAY Sports