According to a report from FOX Sports' Ken Rosenthal, the Athletics have acquired pitchers Jeff Samardzija and Jason Hammel from the Cubs for shortstop prospect Addison Russell.
According to ESPN's Keith Law, the Cubs will receive outfielder Billy McKinney, pitcher Dan Straily and a player to be named later.
Hammel tossed a quality start in a win over Nationals Friday and Samardzija was scheduled to pitch Sunday for the Cubs before the deal. Samardzija is 2-7 with a 2.83 ERA over 17 starts (108 innings). Hammel is 8-5 with a 2.98 ERA and a 1.02 WHIP over 17 starts (108 2/3 innings).