Dillian Whyte easily outpointed former European heavyweight champion on Saturday on the undercard of heavyweight world champion Anthony Joshua taking on Carlos Takam at Principality Stadium in Cardiff.
The judges scored the bout 119-109 (X2), and 118-110. FightNights.com had it 119-109.
Whyte (22-1, 16 KO’s), 29, a native of Jamaica fighting out of the United Kingdom, picked up his sixth consecutive win following a seventh-round TKO defeat at the hands of Joshua in December 2015.
Whyte looked sloppy early on and was hurt from a Helenius left hand in the second round, but he went back to boxing in the third, keeping his opponent at bay behind a stiff jab.
Helenius (25-2, 16 KO’s), 33, of Finland, looked gassed for much of the fight, but landed a sharp uppercut in the seventh round, in which he received a nod of approval from Whyte.
Helenius also struggled with what appeared to be an injury he sustained to his right-hand at the halfway point of the bout, and at that point, was fighting in spurts offensively just to survive.
Whyte trapped Helenius on the ropes and landed a hard combination late, but lacked the power to finish his adversary.