Cuban Hernandez defends IBF cruiserweight crown
Cuba's World cruiserweight champion Yoan Pablo Hernandez (C), pictured on November 23, 2013 in Bamberg, southern Germany - by Timm Schamberger
Two judges marked their cards in favour of Hernandez (115-113, 116-113) but a third went for 43-year-old Arslan (115-113) in a bout late Saturday in Erfurt, Germany.
The victory left Hernandez, 29, with the 29th win of his career, with a sole defeat.
It was the Cuban's fourth title defence since winning the crown from American Steve Cunningham in October 2011.