By Ruslan Chikov

The career of former middleweight champion Arthur Abraham (33-3, 27KOs) is on the line this Saturday night in Kiel, Germany. He defends the WBO European super middleweight title against Piotr Wilczewski (30-2, 10KOs).

"The pressure is certainly big - very big. Everyone is expecting something from me [in this fight]. It's all or nothing," Abraham says.

If Abraham wins, the 32-year-old fighter will challenge the winner of the upcoming fight between WBO champion Robert Stieglitz and mandatory George Groves.

Even Abraham's promoter, Kalle Sauerland, doesn't deny that loss on Saturday would likely end the boxer's career. Abraham was a major force for several years, but he couldn't get it together at 168-pounds and lost three out of his last five fights.

"If Arthur loses, I would advise him to quit," Sauerland said.