Boston Red Sox manager Alex Cora has been sitting Mayer and Anthony against left-handed pitchers, but some are arguing that needs to change.

With the AL East leaders expected to start three left-handed starters in the series at Fenway Park, Alex Cora will turn to Rob Refsnyder and Romy González in his lineup.

Why is Alex Cora hesitant to let talented rookies Roman Anthony and Marcelo Mayer hit against left-handed pitchers? He explained his thinking at length Tuesday afternoon.