Adonis Stevenson retained his WBC world light heavyweight title after Saturday's majority draw against Badou Jack.
Neither fighter could be separated at the end of the 12-round bout in Toronto as the judges scored the fight 114-114, 115-113 to Jack and 114-114.
It was an interesting event at the Air Canada Center, where a man tried to force his way into the ring during a fight on the undercard.
It caused a minor delay in the eighth round of the welterweight clash between Mikael Zewski and Diego Gonzalez Luque.
There was more entertainment in the main event as Stevenson (29-1-1) and Swedish former two-division world champion Jack (21-1-4) went toe-to-toe in a gruelling battle, which saw the referee take an uppercut from the latter as he tried to temporarily separate the fighters.
Haitian-Canadian boxer Stevenson stormed out of the blocks and dominated the first six rounds before the 40-year-old faded – Jack wearing down the veteran en route to a stalemate.
"I won the fight because I hurt him to the body," Stevenson told Showtime post-fight.
Meanwhile, Gary Russell Jr. defended his WBC featherweight bout by outlasting Joseph Diaz.
Russell (29-1) retained the title with a unanimous decision over Diaz (26-1), triumphing 117-111, 117-111 and 115-113.
American Russell, who sustained a hand injury early in the fight, said: "We had to make the adjustments. He couldn't get past my jab. When he got close, we made sure to smother him. Then we reset and got back on the stick."
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