There wasn't a lot of trash talking before the Sergio Martinez-Sergiy Dzinziruk middleweight bout. That didn't mean that Martinez was without a sense of purpose. "I had my highest level of motivation ever," Martinez said. "I want to be the best in the world." Martinez sure looked the part at the MGM Grand at Foxwoods Saturday night. Martinez stopped Sergiy Dzinziruk in the eighth round, knocking down the Ukrainian middleweight three times Saturday night at the MGM Grand at Foxwoods Casino. Referee Arthur Mercante Jr. stopped the bout at 1:43 of the eighth after Martinez (47-2-2, 26 KOs) of Oxnard, Calif., sent Dzinziruk down for the third time. Read more: http://sports.espn.go.com/sports/boxing/news/story?id=6211637