The fight lasted ten out of 12 rounds.
The seconds of the German boxer threw away the towel during the tenth round.
Thus, Beterbiev won by technical knockout and successfully defended his titles.
For the 36-year-old Beterbiev, this victory was the 16th in his career without defeats.
Dines suffered a second defeat with 19 wins.
Earlier it was reported that Silyagin defeated Abdugofurov and won the WBC Super Silver belt.