The Cubs have traded starting pitchers Jeff Samardzija and Jason Hammel to the A's for 2012 first-round pick Addison Russell, 2013 first-round pick Billy McKinney and pitcher Dan Strally, sources close to the situation confirmed.

Samardzija, 29, is 2-7 with a 2.83 ERA while Hammel, 31, is 7-5 with a 2.98 ERA after his latest win on Friday. Hammel is set to be a free agent after this season while Samardzija has one more year of arbitration before becoming a free agent.