After showing interest at different times going back to last winter, the Orioles have acquired left-handed pitcher Joe Saunders from the Arizona Diamondbacks to aid in their playoff push.

Also receiving cash in the deal, the club has agreed to send right-handed reliever Matt Lindstrom and a player to be named later to the Diamondbacks.

The 31-year-old Saunders is 6-10 with a 4.22 earned run average over 21 starts this season. In 130 innings of work, Saunders has struck out 89 and walked 31 while allowing 17 home runs.

Saunders is 75-62 with a 4.17 ERA in eight major league seasons with the Los Angeles Angels and Diamondbacks.

Lindstrom was acquired along with starting pitcher Jason Hammel in the Jeremy Guthrie trade in early February. He was 1-0 with a 2.72 ERA in 36 1/3 innings of work this season despite being sidelined in early May with a finger injury that would keep him out for six weeks.

Saunders’ numbers aren’t exactly overwhelming, but he does bring a veteran presence to the mix as the Orioles try to continue the push for their first postseason appearance in 15 years. Lindstrom pitched well for the club, but he had largely become an afterthought in high-leverage situations after returning from the disabled list in June, making him expendable.

The Orioles also announced prior to Sunday’s game that right-handed pitcher Jake Arrieta has been recalled from Triple-A Norfolk.

After being designated for assignment for the second time this season earlier this week, Orioles pitcher Brad Bergesen has found a new baseball home in Arizona.

As first reported by Kevin Goldstein of Baseball Prospectus, the Diamondbacks claimed the right-handed pitcher on waivers after Bergesen was removed from Baltimore’s roster on Wednesday to make room for starting pitcher Tommy Hunter. The Orioles hoped Bergesen would clear waivers like he did back in May, but the Diamondbacks will place him on their 40-man roster.

Pitching for Triple-A Norfolk this season, Bergesen was 4-3 with a 4.03 earned run average and one save in 22 games that included 10 starts. He allowed 90 hits, struck out 41, and walked 23 in 80 1/3 innings. The 26-year-old did not appear in a game for the Orioles this season.

Bergesen’s best season for the Orioles came in 2009 when he went 7-5 with a 3.43 ERA in 19 starts as a rookie. However, a line drive off the bat of Kansas City’s Billy Butler struck the pitcher’s shin on July 30 of that season, ending his rookie campaign. That incident coupled with an offseason shoulder injury led to little success the next two seasons as Bergesen bounced back and forth between Baltimore and Triple-A Norfolk.

He ends his Orioles career with a 17-24 record and a 4.68 ERA in 83 games and 59 starts.