The White Sox are acquiring star closer Craig Kimbrel from the Cubs, reports Michael Cerami of Bleacher Nation. He’ll pair with Liam Hendriks to give the South Siders a lethal one-two punch at the back end of the bullpen.

Kimbrel becomes the second reliever dealt between the crosstown rivals in as many days. The Sox also picked up Ryan Tepera from the Cubs yesterday. Obviously, adding Kimbrel is a far more impactful development, as the 32-year-old has been arguably the best reliever in baseball over the course of the season.