Rotowire: Dec 17 / 6:15p ET
News: De Leon was released by the Athletics on Thursday, Chris Cotillo of MLB Daily Dish reports.
Impact: De Leon should receive a minor-league offer somewhere, but it's going to be a battle for him to return to the majors in a regular role.
Rotowire: Dec 9 / 10:18a ET
News: The A's designated De Leon for assignment Tuesday, Jane Lee of MLB.com reports.
Impact: At 27, De Leon's window to develop into a major league regular is closing, but he has a strong track record at Triple-A and can pump his fastball in at around 95 mph, so another team may be inclined to take a flier on him on waivers. The A's had to clear some room after acquiring four players in the Jeff Samardzija trade Tuesday.