Athletics acquire Adam Dunn from White Sox

The Athletics have acquired slugger Adam Dunn from the White Sox in exchange for minor-league right-hander Nolan Sanburn, according to a team announcement. The deal was first reported as close by ESPN.com's Buster Olney after Oakland's interest was first mentioned last night by SI.com's Tom Verducci.

Dunn will retire after the season, according to Bruce Levine of 670TheScore.com, meaning that he decided to waive his no-trade clause for a chance to play in the postseason for the first time in his fourteen-year career. He will join the Athletics tomorrow and will likely serve as their designated hitter for the remainder of the season. The veteran has hit only .220/.340/.433 with 20 home runs and 51 RBI in 106 games on the season, but will provide some pop in an Athletics' lineup that currently ranks 21st in the majors in batting average with a .248 mark.

The White Sox will pay roughly $1.2 million of the $2.5 million remaining on Dunn's contract for this season, according to Bruce Levine of 670TheScore.com. Dunn is coming to the end of the four-year, $56 million contract that he signed with the White Sox before the 2011 season, and in total posted a .201/.321/.410 line with 106 home runs in four seasons in Chicago. He is a lifetime .237/.365/.491 hitter, and his 460 home runs ranks him fourth among active major leaguers.

Sanburn, 23, was the Athletics' 2nd round pick in the 2012 draft and has spent the season with High-A Stockton. He is a reliever who has posted a 3-1 record and 3.28 ERA in 42 games with Stockton on the season, and was recently ranked by MLB.com as Oakland's twelfth best prospect due to his powerful fastball and good curveball.

For the Athletics, the addition of Dunn is the latest in a summer in which they have been more aggressive than any team in baseball, adding pieces like Jon Lester, Jonny Gomes, Jeff Samardzija, Jason Hammel and Sam Fuld in trades.