Per reports made by Dan Hayes of CSNChicago.com, it will be announced later today that the Chicago White Sox are to sign stud lefty reliever Zach Duke.

#WhiteSox will announce the signing of left-handed reliever Zach Duke later today. — Dan Hayes (@CSNHayes) November 18, 2014

The deal is for three years worth a reported $15 million.

Duke quietly had a stellar year pitching just north of the Windy City in Milwaukee last season.

The lefty boasted a 2.45 ERA with lefties hitting only .198/.267/.302 against him.

Righties didn’t have much better luck either, hitting .242/.288/.298.

White Sox Vice President/General Manager Rick Hahn had this to say about the left-hander.

“Very early on, we identified Zach as one of the best left-handed free agents available this offseason, so we are very pleased he agreed to join the White Sox, ” general manager Rick Hahn said in a release. “He addresses an important need in our bullpen by giving [manager] Robin Ventura a veteran left-handed option late in games.”

For the White Sox this is a tremendous start to an off-season where bullpen help is considered by an overwhelming majority to be the the top priority for the South Side club.