The A's kicked off their off-season trading early with an October deal not long after they were eliminated in the playoffs. The A's sent Pennington and Cabrera to Arizona for Young and the Diamondbacks then shipped Cabrera to Miami for Heath Bell.
Pennington has appeared in 33 games for the D-Backs, playing both shortstop and second base. He has struggled at the plate, posting a .208/.289/.287 line in 101 at-bats. Defensively, Pennington has been his typical solid self.
After spending all of last season in High-A with the Stockton Ports, Cabrera was sent back to Low-A by the Marlins. He has appeared in 34 games for the Low-A Greensboro Grasshoppers. In 128 at-bats, Cabrera has a .242/.313/.391 line with four homers. Cabrera had a 650 OPS in April, but he has been picking up the pace in May with an 808 OPS.
The A's were looking for more infield and left-handed pitching depth and traded Ross and Kirby-Jones to fill those needs. Ross made the San Diego Opening Day roster and made three starts and one relief appearance before landing on the DL with a left (non-throwing) shoulder injury. In 18 innings for the Padres, Ross had a 3.00 ERA, but his K:BB was 15:11. He has been on a rehab assignment with Triple-A Tucson for the past two weeks and has allowed four runs in 2.2 innings over two appearances.
Kirby-Jones hit 21 homers and had an 843 OPS for the High-A Stockton Ports last season. This year, he has spent the entire season with Double-A San Antonio. Kirby-Jones is off to a slow start with the Missions. In 72 at-bats, he has a .222/.317/.333 line with only one homerun.
Trade #3: A's send Graham Godfrey to the Boston Red Sox to complete a deal for Sandy Rosario
The A's traded a player to be named later to the Red Sox for the rights to Rosario, who had been placed on waivers by Boston. Rosario didn't last long on the A's roster and was eventually re-claimed on waivers by the Red Sox, but Oakland still owed Boston a player, who wound up being Godfrey.
Godfrey has spent the entire season with Triple-A Pawtucket. He has split his time between the bullpen and the rotation, making three starts and five relief appearances. In 30 innings, the right-hander has a 3.60 ERA and a 24:14 K:BB ratio. He hasn't allowed a run over his last two appearances (11 innings).
Trade #4: A's acquire Chris Resop for Zack Thornton
Thornton was the Ports' closer last season, as he saved 16 games for the A's High-A affiliate and struck-out 70 in just 53.2 innings. Sent to the Pirates for reliever Chris Resop, Thornton is off to an excellent start with his new organization. He began the year in High-A and had a 1.93 ERA and a 14:1 K:BB ratio in 14 innings. This week Thornton earned a promotion from the Florida State League to the Double-A Eastern League. He tossed a scoreless two innings in his Double-A debut, walking one and striking out three.
Cowgill was traded on the same day that the A's made Hiroyuki Nakajima's signing official and Nakajima took Cowgill's spot on the 40-man roster. Cowgill made the Mets' Opening Day roster, but he was sent back to Triple-A in early May after hitting .157 with a 467 OPS in 51 at-bats. In 39 at-bats for Triple-A Las Vegas, Cowgill is batting .308 with an 834 OPS.
The A's acquired Jaso as part of a three-team deal that saw Michael Morse go to Seattle and the trio of A's pitching prospects head to the Washington Nationals. Cole returned to the organization that had drafted him in 2010 after just one year in the A's organization. With Oakland, Cole split the 2012 season between High-A and Low-A. He struggled in High-A but was very effective for Low-A Burlington.
This year, the Nationals opted to send Cole to the High-A Carolina League. The right-hander has had a very strong season for the Potomac Nationals thus far. In seven starts, he has a 3.65 ERA, but he has pitched much better than that number would indicate. He has a 41:9 K:BB ratio and he has allowed just two homeruns.
Treinen spent all of last year at High-A Stockton, splitting his time between the Ports' rotation and the bullpen. He also missed time with an injury. This year, Treinen has been at Double-A in the Eastern League, and he has pitched exclusively in the rotation. The right-hander has had an up-and-down season. His ERA is 5.04 and he has a 36:10 K:BB ratio with five homeruns allowed in 44.2 innings. Treinen has had three starts in which he has allowed no runs and one in which he was charged with two, but he has allowed at least five in each of his other four starts.
Krol missed all of the 2011 season, so the A's were careful with the left-hander last year, limiting him to 97 innings pitched between High-A and Double-A. Krol was a starter for most of the year, but the A's moved him into the bullpen late in the season to keep that innings total low. Before the trade, the A's planned to move Krol back into the rotation, but the Nationals liked what they saw from Krol as a reliever and they have kept him in that role this season. Also in Double-A, Krol has been dominant out of the Harrisburg bullpen. In 19.1 innings, he has an 0.93 ERA and a 22:5 K:BB ratio with one homerun allowed. Lefties are hitting only .107 off of Krol.
The rebuilding Astros were looking to find players under team control for several years and they got three in return for Lowrie and Rodriguez. Carter, the former A's top prospect, came to Houston after a break-through 2012 campaign that saw him find success at the major-league level for the first time. Carter has been an everyday player for the Astros this season, playing some outfield, some first base and some DH.
The Astros have struggled badly as a team, but Carter has had some bright moments in the early going this season. His .222/.303/.452 line is relatively mediocre, but he has nine homeruns and is having to battle to see good pitches in a line-up mostly devoid of threats. Carter may challenge some strike-out records this season. He has 58 in 135 at-bats.
Peacock began the year in the big leagues, but he was sent back to Triple-A Oklahoma City in early May after posting a 9.41 ERA in 22 innings for the Astros. Peacock struggled with his command with Houston, walking 13 and coughing up seven homers. In two starts for the RedHawks, Peacock has allowed six runs in 11 innings, but he has a 14:1 K:BB ratio.
Stassi's progress in the A's chain was hampered by injuries, and it has been a little bit of the same story thus far for him with Houston. He was diagnosed with a sports hernia during spring training and had surgery that cost him the first month of the season. Stassi made his debut on May 2nd against the A's Double-A affiliate in Midland, and he had a good game, hitting a homer in three at-bats. Since then, over a span of six games, Stassi has four hits in 24 at-bats, none of which have gone for extra-bases.