Dunn announced his retirement from baseball following the Athletics' season-ending loss in Tuesday's American League Wild Card game, ESPN.com reports. Dunn never got in the game Tuesday in his first taste of the postseason in his 14-year career, but the 34-year-old is content to pack it in after a successful run with the Reds, Nationals, Diamondbacks, White Sox and Athletics. Though his time in the majors was often marred by a prodigious strikeout rate, his ability to draw walks (.364 career OBP) and hit for power (462 home runs) made his in asset in the middle of the order. So long, Big Donkey.

Dunn is not in the lineup for Tuesday's AL Wild Card game, Susan Slusser of the San Francisco Chronicle reports. Dunn has finally reached the postseason in his 14th major league season, but he'll find himself on the bench for the team's win-or-go-home matchup against Kansas City. While a right-hander in James Shields is toeing the rubber for the Royals, Dunn is just 7-for-35 with 16 strikeouts in his career against Shields. The 34-year-old Dunn should see at least one at-bat off the bench.

Dunn was added to the lineup as the DH for Saturday's game against the Rangers, MLB.com's Jane Lee reports. Dunn was not in the original lineup for the A's, but the Rangers scratched lefty Derek Holland (head) and are now starting righty Scott Baker, so A's manager switched from a righty-heavy lineup to a lefty-heavy one. Dunn will hit second and replace Derek Norris, who was originally slated to be the DH.

Dunn will bat second Friday against the Rangers. It's a rather peculiar lineup choice by manager Bob Melvin, especially considering Dunn is 0-for-8 in his career against Friday's starter Nick Tepesch. However, the likes of Sam Fuld and Josh Reddick have failed to provide much spark from the two-hole in recent days, so Melvin will get creative and move Dunn up to the No. 2 spot, where he's logged just one at-bat since 2008.

Dunn is out of the lineup Wednesday against the Angels. Dunn will sit with the left-handed Hector Santiago on the mound for the Angels. He has struggled to match his power numbers from his time in Chicago, hitting just two home runs in 51 at bats, or a rate of just over 25 at-bats per home run with the A's compared to an 18.15 AB/HR rate with the White Sox.

Dunn is out of the lineup Tuesday against the Angels, Susan Slusser of the San Francisco Chronicle reports. The Angels are trotting out three straight lefties against Oakland, so Dunn may not make a start during the series. He did, however, log two at-bats off the bench Monday, and manager Bob Melvin likely won't hesitate to bring Dunn in again Tuesday once starter Wade LeBlanc is forced from the game.

Dunn is out of the lineup Wednesday against the Rangers. Dunn will bow out of the lineup for the first time in three games with a lefty on the mound for the Rangers. Derek Norris serves as the Athletics' designated hitter in Dunn's pace.

Dunn is out of the lineup Friday against the Mariners, Susan Slusser of the San Francisco Chronicle reports. Nothing to see here, as the M's are trotting out a lefty in James Paxton and Dunn is just 9-for-55 (.164 average) against lefties this season. His exposure to southpaws will remain very limited over the remainder of the season.

Dunn is out of the lineup Thursday against the White Sox, Susan Slusser of the San Francisco Chronicle reports. Dunn will sit for the finale against his former team, after going 2-for-8 in two starts earlier in the series. It comes as no surprise given lefty Chris Sale is toeing the rubber for Chicago, as Dunn has started almost exclusively against right-handers since joining Oakland.

Dunn is out of the lineup Sunday against the Astros. Dunn will take a seat Sunday with the left-handed Dallas Keuchel on the mound, joining a group of lefties. Derek Norris will start as the designated hitter Sunday in his place.