The Dodgers have designated reliever Sergio Santos for assignment, the club announced. He’ll be replaced on the active roster by outfielder Chris Heisey, though more broadly the move is presumably related to the six-player trade expected to be announced soon — which will deliver new relief arms to L.A.

Santos, 31, came to Los Angeles on a minor league deal but quickly ascended to the MLB roster. Over 13 1/3 big league innings, he owns a 4.73 ERA with 10.1 K/9 versus 4.7 BB/9 and a 46.2% groundball rate. Santos seems likely to receive another chance at some point, with the Dodgers organization or otherwise, particularly as advanced metrics suggest his mediocre ERA has masked somewhat more promising actual performance levels.