Super middleweight titlist Arthur Abraham and Robert Stieglitz, whose all-German rivalry has already produced three compelling fights, will meet for the fourth time on July 18 at Gerry Weber Stadium in Halle, Germany, promoter Sauerland Event announced on Monday.

Abraham (42-4, 28 KOs) owes a mandatory title defense to Stieglitz (47-4-1, 27 KOs), and their teams recently made a deal to avoid a purse bid before announcing the particulars of the fight.

Robert Stieglitz, right, will look to even his record against Arthur Abraham, left, at 2-2 when the two meet for the fourth time on July 18. Martin Rose/Bongarts/Getty Images

"The battle for super middleweight supremacy continues," promoter Kalle Sauerland said. "I'm hard-pressed to think of any other trilogy in modern boxing history that has provided such a high level of drama. For that reason, we go again. On July 18, for [the] fourth time, Arthur and Robert will contest the WBO super middleweight title."

Abraham and Stieglitz met for the first time in August 2012 and Abraham won a competitive decision to take the 168-pound belt. In March 2013, they met in a rematch, and Stieglitz knocked out Abraham in the fourth round to reclaim the title. Bout No. 3 was in March 2014, with Abraham scoring a 12th-round knockdown and winning a dramatic split decision to reclaim the title, which set the stage for the eventual fourth meeting.

Abraham, 35, a former middleweight titleholder, has won six fights in a row since the loss to Stieglitz in the rematch.

"Robert is [the] mandatory challenger, so of course he deserves his shot," said Abraham, who will be making his fourth defense. "I've enjoyed our rivalry, but like all good things, this must come to an end. The Gerry Weber Stadium will provide the perfect venue for me to finish our feud. I had Robert down in the 12th round of our last encounter, but this time, he will hit the canvas a lot sooner."