With the MLB trade deadline looming, struggling Marlins ace Sandy Alcantara emerges as a potential trade target for the Red Sox, who could gamble on his upside despite a league-worst ERA.

The Red Sox also assigned catcher Ronaldo Hernández, who they signed to a minor league deal July 17, to Double-A Portland to make room for Tromp. He appeared in four games for Worcester.

The Boston Red Sox have until Thursday, July 31 at 6 p.m. to bolster their bullpen to make a push for the playoffs.