MANNHEIM, Germany – Viktor Jurk scored a one-punch knockout with the first shot he threw at the SAP Arena.

He walked out for his bout with 13-3 (8 KOs) Colombian Edwin Castillo and threw a left hook that dramatically dumped Castillo flat on his back.

Time of the stoppage was not announced but could have been as little as five seconds.  

The towering heavyweight contender Jurk, all 6ft 9ins of him, is now 14-0 (12 KOs) and there are high hopes for the 26-year-old southpaw from Flensburg, Germany.

Castillo was able to stand for the result to be read out.

Boos rang out around the SAP Arena after Frankfurt cruiserweight Alexander Okafor was ruled a split decision winner over Elija Uelkuseven.

It seemed Uelkuseven had outworked the eventual winner but while one judge scored it 96-93 in Uelkuseven’s favor, two judges preferred Okafor by 95-94.

Okafor is now 4-0 (2 KOs),

Uelkuseven, who dropped to 8-1 (6 KOs), was born in Heidelberg but fights out of Las Vegas and the second round was torrid for Okafor who shipped a lot of shots as Uelkuseven looked for an early finish. But Okafor flew out of the gates in the third, landing slashing hooks with both hands and dropping a suddenly-dishevelled looking Uelkuseven.

But Uelkuseven, bleeding from the mouth, came back into it.

Though the pace slowed in the middle rounds it remained a good, even and highly-watchable fight. Okafor bled from the nose in the sixth and shipped a right at the end of the session. It remained hotly-contested the rest of the way and there was little in it, but the vast majority believed Uelkuseven, who had to fight through his emotions in the post-fight interview, had done enough.

At lightweight, Devrim Goekduman, from Karlsruhe, Germany, is now 13-0-1 (8 KOs) and Franklyn Dwomoh is 9-0-1 (2 KOs) after a hard-fought draw. Scores were 95-94 each way and 94-94.

Dwomoh, fighting out of Hamburg, had the great Roy Jones in his corner and the decision was booed and neither fighter looked satisfied by the outcome.

Dwomoh sometimes stayed in the pocket too long and was caught by both left hooks and right hands in the third, although he landed a hook of his own that the judges surely would have seen.

And he started the fourth quickly, soon having Goekduman on the canvas and then blitzing him with his follow up assault.

However, Dwomoh punched himself out and his volume dropped allowing Goekduman to come forward.

A right to the body momentarily slowed Goekduman but he was on the front foot near the end of the round.

Goekduman maintained his forward march in the fifth but the pace slowed in the sixth.  Dwomoh was bundled to the floor a couple of times and he came through some rough moments in the seventh when Goekduman backed him up with a straight right hand.

Dwomoh was in there throwing to the end, landing with a strong left hook in the 10th and final round, but he had not done enough.

Earlier in the evening, unbeaten middleweight Oluwole Jan Ciosek moved to 5-0 (2 KOs) with an eight-round decision over Kent, Washington’s, Shae Green, who is now 9-2-1 (2).

Debutant Edmon Avagyan scored a three-round stoppage of 13-8-2 (8 KOs) Patrik Fiala at cruiserweight.