Lenzelle Smith Jr. scored 17 points and LaQuinton Ross added 15 to lead No. 3 Ohio State past Louisiana at Monroe 71-31 on Friday night.
Amedeo Della Valle chipped in with 14 points for the Buckeyes (13-0), who have won their first 13 games in a season for the fifth time in school history (1961, `62, `91 and 2011).
\Jayon James led the Warhawks (3-5), who have lost their last four, with eight points.
They hit just 19 percent of their shots from the field (10 of 54) and 17 percent on 3-pointers (3 of 18).
The Buckeyes won each of their first 11 games by double digits. They came into the game fifth in the nation in scoring defense (55.9 points) and 13th in field goal percentage defense (.379).
The Buckeyes, who led 12-0 in the opening 4 minutes, held the Warhawks to 20 points on 23.3 percent shooting in the opening half.