Eaton won’t be able to help out the bullpen, of course, which has looked shaky for two games in a row. First it was Isaiah Campbell on Saturday, whose poor performance forced Alex Cora to call on Aroldis Chapman, then it was Greg Weissert yesterday. (Christopher Smith, MassLive)

"First baseman Nathaniel Lowe and the Boston Red Sox are finalizing a deal, sources tell ESPN. Lowe was DFA’d by Washington earlier this week and will head to Boston and join one of the best lineups in the league," Passan said.

The Red Sox appeared to be on the verge of sweeping the Marlins when they took a 3-1 lead into the eighth inning on Sunday, but the bullpen couldn’t come through after Garret Crochet departed following the seventh inning, and Miami rallied for a 5-3 win.

Red Sox closer Aroldis Chapman was unavailable Sunday after he pitched on back-to-back days. Manager Alex Cora instead used Greg Weissert.

The Nathaniel Lowe signing is good news for the Boston Red Sox on the whole, but certainly not for every individual on the roster. Major League Baseball is an immensely competitive business, and the Red Sox brought in Lowe because they've never truly solved the first base position this year.

Greenwell spent his entire 12-year MLB career with the Red Sox and in 2008 was inducted into the team’s hall of fame.

The Red Sox are on the verge of adding some much-needed pop at first base, as the club is close to finalizing a deal with veteran free agent Nathaniel Lowe, a source told MLB.com. The team has not confirmed the agreement.

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The Red Sox lost to the Miami Marlins on Sunday afternoon, but Jarren Duran continues to make an impact up and down the stat sheet.