QUEBEC CITY - Canadian southpaw Adonis Stevenson retained his World Boxing Council light heavyweight world title with a lopsided decision over Australian Sakio Bika. Haitian-born "Superman" Stevenson dropped Bika twice, but he couldn't finish him off. Bika fell to 32-7 with three drawn and 21 knockouts -- but he's still never been stopped inside the distance. "I know Sakio Bika is a tough guy, so I prepared for 12 rounds," Stevenson said. Stevenson took some time to get to grips with Bika's awkward style, but got to him with some hard punches in the fifth when Bika went down in what was ruled a slip. He sent Bika to the canvas in the sixth with a big left, and connected with a short left to the mouth to drop him again in the ninth. The ringside judges scored the bout 115-111, 116-110 and 115-110 in favor of Stevenson.