The Dodgers made a trade, but it was not for a reliever -- although, he has come out of the pen before. As you likely know by now, the Dodgers picked up first baseman Tyler White from the Houston Astros, and hopefully we didn't trade a future star in return (like Yordan Álvarez). Per a Dodger Press release:
The Los Angeles Dodgers today announced that they have acquired infielder Tyler White from the Houston Astros in exchange for right-handed pitcher Andre Scrubb.
White, 28, was designated for assignment on July 19 by the Astros.