Athletics acquire Yonder Alonso from Padres in four-player trade

The Athletics have acquired first baseman Yonder Alonso and left-hander Mark Rzepczynski from the Padres in exchange for left-handers Drew Pomeranz and Jose Torres, a source has confirmed to MLB Daily Dish The deal was first reported by Keith Law of ESPN.com and is expected to be announced later today.

Alonso, 28, will likely become the starting first baseman for an Athletics team that currently has Mark Canha and Stephen Vogt as its primary options on the depth chart. Oakland has begun to revamp its infield with the additions of Alonso and Jed Lowrie in the last two weeks, and is expected to shop both Danny Valencia and Brett Lawrie in discussions at next week's Winter Meetings.

Alonso is a veteran of six major-league seasons with the Reds (2010-11) and Padres (2012-15) and owns a lifetime .273/.340/.392 line with 32 home runs in that span. He is the latest significant Padre to be sent out of San Diego this winter, joining pitchers Joaquin Benoit (Mariners) and Craig Kimbrel (Red Sox).

Rzepczynski, 30, will provide an additional left-handed arm in the Athletics' bullpen, giving the team a second southpaw alongside Sean Doolittle. Oakland has begun to revamp its bullpen in a couple of recent trades, with Rzepczynski and Liam Hendriks joining the club in place of Pomeranz and Jesse Chavez, who was dealt to Toronto.

Pomeranz, 27, has served as both a starter and reliever in his five major-league seasons with the Rockies (2011-13) and Athletics (2014-15). He posted a 3.66 ERA in 53 games (9 starts) with Oakland last season and will likely be a long reliever for San Diego next season. Pomeranz is under team control through the 2018 season.

Torres, 22, has spent five seasons in the minors and has posted a 4.34 ERA in 99 appearances (39 starts). He is ranked by MLB.com as the 23rd-best prospect in the Athletics' system and is thought to eventually project as a setup man in the majors.