Leon was traded to the Blue Jays on Tuesday for cash considerations. After designating Leon for assignment shortly before the New Year, the Athletics found a trade partner for the 27-year-old right-hander and will receive cash in return. Leon worked a 4.39 ERA out of the Oakland bullpen last season and will likely compete for a spot in Toronto's crowded but unsettled bullpen this spring.
The Athletics designated Leon for assignment Monday. In order to open a spot on the 40-man roster for free-agent signee Henderson Alvarez (shoulder), Leon was the fall guy. After splitting the 2015 season between the Athletics and Triple-A Nashville, though, he should open spring training with the big club with the intention of landing a role out of the bullpen.
The Athletics added a number of players to their expanded active roster on Tuesday. Cody Martin , who will start Tuesday's game against the Angels, was recalled from Triple-A Nashville. Joining him are R.J. Alvarez , Carson Blair , Ryan Dull , Tyler Ladendorf , Arnold Leon , Dan Otero and Jason Pridie .
The Athletics have promoted left-hander Brad Mills from Triple-A Nashville and tabbed him to start Friday night in Baltimore. They have also optioned pitcher Arnold Leon to Triple-A Sacramento and designated fellow righty Taylor Thompson for assignment. Mills hasn't exactly earned the nod. He has allowed 34 runs on 54 hits in his last 46 innings pitched, which covers seven starts. He is 4-11 with a 4.45 ERA on the year.
The Athletics have recalled right-handed reliever Arnold Leon from Triple-A Nashville. Leon has made seven appearances for the A's across several trips between the big leagues and Triple-A. In those seven games, Leon owns a 3.72 ERA over 9 2/3 innings. His most recent stay with the A's lasted all of one day. But now, the team intends on keeping him around a little while longer. "We wanted to take a harder look at Arnold," manager Bob Melvin said, per MLB.com. "He's been up here a couple times, hasn't really gotten an opportunity to be in a prominent role. It's just been one-inning stints for the most part." He is taking the roster spot of Dan Otero, who was optioned to Triple-A on Monday. Otero has pitched frequently over the last few weeks, throwing 8 1/3 innings over his last six appearances. So it appears Oakland is making a move to get a fresh arm in the bullpen.