In their fourth and hopefully last fight, WBO super middleweight champion Arthur Abraham (43-4, 29 KOs) scored a brutal sixth round KO over Robert Stieglitz (47-4-1, 27 KOs) on Saturday night in Halle, Germany. Stieglitz was the busier fighter, but Abraham’s power advantage was the deciding factor in this fight. The fight ended in round six when Stieglitz was hit and dropped to all fours. Time was 1:14. Abraham has the edge in the series with Stieglitz 3-1.